[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"grammar-exercise-01a0e1ab-e001-76e1-a32c-ef3973b9bc0d":3,"grammar-exercise-lesson-01a0e1ab-d614-7ce6-bb2b-df1c89246cd8":341},{"id":4,"grammarPage":5,"title":6,"instructions":7,"seoTitle":8,"seoDescription":9,"displayOrder":10,"type":11,"questions":12,"ogImageUrl":340},"01a0e1ab-e001-76e1-a32c-ef3973b9bc0d","\u002Fapi\u002Fgrammar_pages\u002F01a0e1ab-d614-7ce6-bb2b-df1c89246cd8","That-Clauses and Whether-Clauses as Complements — Forms in Context","Choose the option that completes each sentence in context. Where an option contains a slash, both alternatives must fit.","That and Whether Clauses: Forms in Context","Practise that and whether complement clauses with gap-fill questions about workplace decisions, travel plans, reported beliefs and everyday checks.",0,"word_select",[13,35,53,71,90,116,141,166,185,216,235,254,281,297,315],{"id":14,"sentenceTemplate":15,"displayOrder":10,"explanation":16,"exampleSentence":17,"blanks":18},"01a0e1ab-e001-7a71-a32c-ef3976d67bfd","There is no evidence yet, but the manager believes __1__ the new timetable will reduce delays.","Believes introduces the content of a belief with that, not an open yes\u002Fno question with whether or if. The lack of evidence does not prevent a that-clause.","Although nobody has tested it, I think that this method will save water.",[19],{"id":20,"blankNumber":21,"options":22},"01a0e1ab-e001-79e5-a32c-ef397643de19",1,[23,27,31],{"id":24,"optionText":25,"isCorrect":26,"displayOrder":10},"01a0e1ab-e001-78d9-a32c-ef39749813cf","whether",false,{"id":28,"optionText":29,"isCorrect":30,"displayOrder":21},"01a0e1ab-e001-7949-a32c-ef39753fb5e3","that",true,{"id":32,"optionText":33,"isCorrect":26,"displayOrder":34},"01a0e1ab-e001-7999-a32c-ef3975a582d8","if",2,{"id":36,"sentenceTemplate":37,"displayOrder":21,"explanation":38,"exampleSentence":39,"blanks":40},"01a0e1ab-e001-7c65-a32c-ef3979ba1df9","The organiser says, “I know whether the speaker has accepted, but the answer is confidential.” This means the organiser __1__.","Know whether means having the answer to a yes\u002Fno question. It does not reveal whether the answer is yes or no, and it does not imply uncertainty here.","Rosa knows whether we passed, although she cannot announce the results yet.",[41],{"id":42,"blankNumber":21,"options":43},"01a0e1ab-e001-7bf5-a32c-ef3978d808b5",[44,47,50],{"id":45,"optionText":46,"isCorrect":26,"displayOrder":10},"01a0e1ab-e001-7b2d-a32c-ef397713614d","knows that the speaker has accepted",{"id":48,"optionText":49,"isCorrect":26,"displayOrder":21},"01a0e1ab-e001-7b79-a32c-ef3977698c43","does not yet know the answer",{"id":51,"optionText":52,"isCorrect":30,"displayOrder":34},"01a0e1ab-e001-7bb9-a32c-ef3977ffe8b6","knows the answer but is keeping it private",{"id":54,"sentenceTemplate":55,"displayOrder":34,"explanation":56,"exampleSentence":57,"blanks":58},"01a0e1ab-e001-7e19-a32c-ef397d4f31b5","Could you find out whether __1__ before we book our tickets?","The whether-clause uses subject + verb: the museum opens. Although the whole sentence is a question, the complement has neither inversion nor question-forming does.","Can you tell me whether the café serves lunch?",[59],{"id":60,"blankNumber":21,"options":61},"01a0e1ab-e001-7dad-a32c-ef397cb0ef6f",[62,65,68],{"id":63,"optionText":64,"isCorrect":30,"displayOrder":10},"01a0e1ab-e001-7ced-a32c-ef397aac3a94","the museum opens on Mondays",{"id":66,"optionText":67,"isCorrect":26,"displayOrder":21},"01a0e1ab-e001-7d31-a32c-ef397b70269a","does the museum open on Mondays",{"id":69,"optionText":70,"isCorrect":26,"displayOrder":34},"01a0e1ab-e001-7d71-a32c-ef397bd9d43b","opens the museum on Mondays",{"id":72,"sentenceTemplate":73,"displayOrder":74,"explanation":75,"exampleSentence":76,"blanks":77},"01a0e1ab-e002-702b-a4cd-b73a3bcc812b","Ben has ignored three invitations. I wonder whether __1__ to join the group.",3,"A negative whether-clause still uses subject + verb order. Negative does not is allowed after he; it is not the question-forming does that causes inversion.","We wondered whether the machine did not recognise the new cards.",[78],{"id":79,"blankNumber":21,"options":80},"01a0e1ab-e001-7f5d-a32c-ef397f609945",[81,84,87],{"id":82,"optionText":83,"isCorrect":26,"displayOrder":10},"01a0e1ab-e001-7e9d-a32c-ef397dc3016c","does he not want",{"id":85,"optionText":86,"isCorrect":30,"displayOrder":21},"01a0e1ab-e001-7ee1-a32c-ef397e6823c6","he does not want",{"id":88,"optionText":89,"isCorrect":26,"displayOrder":34},"01a0e1ab-e001-7f21-a32c-ef397e6d9e4b","does not he want",{"id":91,"sentenceTemplate":92,"displayOrder":93,"explanation":94,"exampleSentence":95,"blanks":96},"01a0e1ab-e002-7323-a4cd-b73a412471cf","The organiser is pleased __1__ everyone can attend, but uncertain __2__ the room is large enough.",4,"Pleased introduces the content of a feeling with that. Uncertain introduces the unresolved yes\u002Fno question about room size with whether; what would require a different clause structure.","I am aware that the shop has moved, but unsure whether it still sells furniture.",[97,106],{"id":98,"blankNumber":21,"options":99},"01a0e1ab-e002-717f-a4cd-b73a3e3d5393",[100,102,104],{"id":101,"optionText":25,"isCorrect":26,"displayOrder":10},"01a0e1ab-e002-70b7-a4cd-b73a3c5ed650",{"id":103,"optionText":33,"isCorrect":26,"displayOrder":21},"01a0e1ab-e002-70ff-a4cd-b73a3cb6bdf3",{"id":105,"optionText":29,"isCorrect":30,"displayOrder":34},"01a0e1ab-e002-713f-a4cd-b73a3db2ec03",{"id":107,"blankNumber":34,"options":108},"01a0e1ab-e002-72b3-a4cd-b73a403ba1e3",[109,111,113],{"id":110,"optionText":25,"isCorrect":30,"displayOrder":10},"01a0e1ab-e002-71e7-a4cd-b73a3e4e8c68",{"id":112,"optionText":29,"isCorrect":26,"displayOrder":21},"01a0e1ab-e002-7227-a4cd-b73a3f0bbf04",{"id":114,"optionText":115,"isCorrect":26,"displayOrder":34},"01a0e1ab-e002-7263-a4cd-b73a40034069","what",{"id":117,"sentenceTemplate":118,"displayOrder":119,"explanation":120,"exampleSentence":121,"blanks":122},"01a0e1ab-e002-7667-a4cd-b73a4557368a","In the report, the claim __1__ the medicine works is separate from the question __2__ it is safe for children.",5,"The noun claim takes statement content introduced by that; a claim need not be proven. The question introduces a yes\u002Fno issue with whether. Keeping that also makes the formal noun-complement structure clear.","The suggestion that we need another office raises the question whether we can afford one.",[123,132],{"id":124,"blankNumber":21,"options":125},"01a0e1ab-e002-74d3-a4cd-b73a4341d3de",[126,128,130],{"id":127,"optionText":25,"isCorrect":26,"displayOrder":10},"01a0e1ab-e002-7413-a4cd-b73a41cf737e",{"id":129,"optionText":29,"isCorrect":30,"displayOrder":21},"01a0e1ab-e002-745b-a4cd-b73a4297aba9",{"id":131,"optionText":33,"isCorrect":26,"displayOrder":34},"01a0e1ab-e002-7497-a4cd-b73a42ed63b5",{"id":133,"blankNumber":34,"options":134},"01a0e1ab-e002-75fb-a4cd-b73a44cb69bb",[135,137,139],{"id":136,"optionText":29,"isCorrect":26,"displayOrder":10},"01a0e1ab-e002-7547-a4cd-b73a4422c07a",{"id":138,"optionText":115,"isCorrect":26,"displayOrder":21},"01a0e1ab-e002-758b-a4cd-b73a4424f474",{"id":140,"optionText":25,"isCorrect":30,"displayOrder":34},"01a0e1ab-e002-75c3-a4cd-b73a448905e6",{"id":142,"sentenceTemplate":143,"displayOrder":144,"explanation":145,"exampleSentence":146,"blanks":147},"01a0e1ab-e002-7963-a4cd-b73a49b1b325","Our problem is __1__ the last bus has already left. The question now is __2__ we should walk or call a taxi.",6,"After is, that presents the stated problem. Whether presents the choice between walking and calling a taxi; that would present a statement rather than identify the open question.","The difficulty is that the kitchen is closed; the question is whether we can eat elsewhere.",[148,157],{"id":149,"blankNumber":21,"options":150},"01a0e1ab-e002-77d3-a4cd-b73a47a2fcda",[151,153,155],{"id":152,"optionText":29,"isCorrect":30,"displayOrder":10},"01a0e1ab-e002-770f-a4cd-b73a45dae968",{"id":154,"optionText":25,"isCorrect":26,"displayOrder":21},"01a0e1ab-e002-7753-a4cd-b73a46c61474",{"id":156,"optionText":33,"isCorrect":26,"displayOrder":34},"01a0e1ab-e002-7793-a4cd-b73a46d7b84b",{"id":158,"blankNumber":34,"options":159},"01a0e1ab-e002-78f3-a4cd-b73a48da71f0",[160,162,164],{"id":161,"optionText":115,"isCorrect":26,"displayOrder":10},"01a0e1ab-e002-783b-a4cd-b73a47d44329",{"id":163,"optionText":25,"isCorrect":30,"displayOrder":21},"01a0e1ab-e002-787b-a4cd-b73a482946cc",{"id":165,"optionText":29,"isCorrect":26,"displayOrder":34},"01a0e1ab-e002-78b7-a4cd-b73a48d0ff80",{"id":167,"sentenceTemplate":168,"displayOrder":169,"explanation":170,"exampleSentence":171,"blanks":172},"01a0e1ab-e002-7b4b-a4cd-b73a4b2fcab0","A supervisor says, “Check that each parcel has a label.” By choosing that rather than whether, the supervisor asks you to __1__.",7,"Check that presents the required state to make sure of. Check whether would instead frame the task as finding the answer to a yes\u002Fno question.","Before leaving the laboratory, check that all the windows are shut.",[173],{"id":174,"blankNumber":21,"options":175},"01a0e1ab-e002-7adf-a4cd-b73a4a9b04bd",[176,179,182],{"id":177,"optionText":178,"isCorrect":26,"displayOrder":10},"01a0e1ab-e002-7a0b-a4cd-b73a49cecf9b","find out if every parcel has a label or not",{"id":180,"optionText":181,"isCorrect":26,"displayOrder":21},"01a0e1ab-e002-7a5f-a4cd-b73a4a096bea","ask what information the labels contain",{"id":183,"optionText":184,"isCorrect":30,"displayOrder":34},"01a0e1ab-e002-7aa3-a4cd-b73a4a5b65df","make sure every parcel has a label",{"id":186,"sentenceTemplate":187,"displayOrder":188,"explanation":189,"exampleSentence":190,"blanks":191},"01a0e1ab-e002-7e1f-a4cd-b73a4ecf8e3b","Complete these conversational versions without that: “Mia said __1__.” “I am glad __2__.”",8,"That can be omitted after the common verb said and the adjective glad, especially in conversation. The remaining clauses keep statement order; whether would not preserve these statement and feeling complements.","We think the repairs are finished, and we are pleased the house is warm again.",[192,204],{"id":193,"blankNumber":21,"options":194},"01a0e1ab-e002-7c9b-a4cd-b73a4d6be99e",[195,198,201],{"id":196,"optionText":197,"isCorrect":30,"displayOrder":10},"01a0e1ab-e002-7bd3-a4cd-b73a4c05ec8d","she had found her keys",{"id":199,"optionText":200,"isCorrect":26,"displayOrder":21},"01a0e1ab-e002-7c1f-a4cd-b73a4c42cfa2","had she found her keys",{"id":202,"optionText":203,"isCorrect":26,"displayOrder":34},"01a0e1ab-e002-7c5f-a4cd-b73a4caf80a5","whether she had found her keys",{"id":205,"blankNumber":34,"options":206},"01a0e1ab-e002-7db7-a4cd-b73a4ec9916a",[207,210,213],{"id":208,"optionText":209,"isCorrect":26,"displayOrder":10},"01a0e1ab-e002-7d03-a4cd-b73a4daebb69","did you enjoy the meal",{"id":211,"optionText":212,"isCorrect":30,"displayOrder":21},"01a0e1ab-e002-7d3f-a4cd-b73a4e0e6c5e","you enjoyed the meal",{"id":214,"optionText":215,"isCorrect":26,"displayOrder":34},"01a0e1ab-e002-7d7b-a4cd-b73a4e8c6267","whether you enjoyed the meal",{"id":217,"sentenceTemplate":218,"displayOrder":219,"explanation":220,"exampleSentence":221,"blanks":222},"01a0e1ab-e003-7058-affa-f3dd5c7e0ce1","Keep the open yes\u002Fno question in this shorter version of “I wonder whether the library is busy”: “I wonder __1__.”",9,"Whether cannot simply be dropped like optional that. Wonder needs a question complement here; that it is busy and it is busy do not express the intended open question.","I wonder whether our neighbours need a lift.",[223],{"id":224,"blankNumber":21,"options":225},"01a0e1ab-e002-7f8f-a4cd-b73a5169becb",[226,229,232],{"id":227,"optionText":228,"isCorrect":26,"displayOrder":10},"01a0e1ab-e002-7ec7-a4cd-b73a4fa64dc9","it is busy",{"id":230,"optionText":231,"isCorrect":26,"displayOrder":21},"01a0e1ab-e002-7f0f-a4cd-b73a505b773e","that it is busy",{"id":233,"optionText":234,"isCorrect":30,"displayOrder":34},"01a0e1ab-e002-7f4f-a4cd-b73a5094c86b","whether it is busy",{"id":236,"sentenceTemplate":237,"displayOrder":238,"explanation":239,"exampleSentence":240,"blanks":241},"01a0e1ab-e003-7220-affa-f3dd5e8a11c3","Choose the pair whose two words both fit: “We do not know __1__ the restaurant takes bookings.”",10,"After do not know, both whether and if can introduce this open yes\u002Fno question. That does not preserve that question meaning, and what cannot introduce the complete clause the restaurant takes bookings. Whether is often preferred in formal writing.","Please ask if the sports centre has lockers.",[242],{"id":243,"blankNumber":21,"options":244},"01a0e1ab-e003-71a0-affa-f3dd5e5a157f",[245,248,251],{"id":246,"optionText":247,"isCorrect":30,"displayOrder":10},"01a0e1ab-e003-70e0-affa-f3dd5d0dc703","whether \u002F if",{"id":249,"optionText":250,"isCorrect":26,"displayOrder":21},"01a0e1ab-e003-7128-affa-f3dd5de147cb","that \u002F whether",{"id":252,"optionText":253,"isCorrect":26,"displayOrder":34},"01a0e1ab-e003-7164-affa-f3dd5def493f","if \u002F what",{"id":255,"sentenceTemplate":256,"displayOrder":257,"explanation":258,"exampleSentence":259,"blanks":260},"01a0e1ab-e003-751c-affa-f3dd61d72e30","We talked about __1__ the service should continue. We also talked about __2__ passenger numbers had fallen.",11,"After the preposition about, a yes\u002Fno question takes whether, not if. For the stated fall in passenger numbers, the fact supplies a noun before that; about that passenger numbers had fallen is not a valid complement pattern.","The decision depends on whether enough people register; we are worried about the fact that only three have applied.",[261,270],{"id":262,"blankNumber":21,"options":263},"01a0e1ab-e003-7388-affa-f3dd5f03669b",[264,266,268],{"id":265,"optionText":33,"isCorrect":26,"displayOrder":10},"01a0e1ab-e003-72a0-affa-f3dd5e905626",{"id":267,"optionText":29,"isCorrect":26,"displayOrder":21},"01a0e1ab-e003-72e0-affa-f3dd5ea8d0b2",{"id":269,"optionText":25,"isCorrect":30,"displayOrder":34},"01a0e1ab-e003-7320-affa-f3dd5ed4a1b1",{"id":271,"blankNumber":34,"options":272},"01a0e1ab-e003-74ac-affa-f3dd60eb6b8f",[273,275,278],{"id":274,"optionText":29,"isCorrect":26,"displayOrder":10},"01a0e1ab-e003-73f8-affa-f3dd5fb8a469",{"id":276,"optionText":277,"isCorrect":30,"displayOrder":21},"01a0e1ab-e003-7434-affa-f3dd5fdbca19","the fact that",{"id":279,"optionText":280,"isCorrect":26,"displayOrder":34},"01a0e1ab-e003-7474-affa-f3dd6093a8f1","the fact whether",{"id":282,"sentenceTemplate":283,"displayOrder":284,"explanation":285,"exampleSentence":286,"blanks":287},"01a0e1ab-e003-76f4-affa-f3dd64b159ed","The organiser needs an answer: “Please tell me __1__ or not you need a parking space.”",12,"Immediately before or not, use whether. If can introduce many yes\u002Fno complements, but it cannot replace whether in this position; that introduces statements, not this choice.","We must establish whether or not the building has a lift.",[288],{"id":289,"blankNumber":21,"options":290},"01a0e1ab-e003-7684-affa-f3dd64209f28",[291,293,295],{"id":292,"optionText":25,"isCorrect":30,"displayOrder":10},"01a0e1ab-e003-75c4-affa-f3dd628232ec",{"id":294,"optionText":33,"isCorrect":26,"displayOrder":21},"01a0e1ab-e003-7608-affa-f3dd62f7c7b0",{"id":296,"optionText":29,"isCorrect":26,"displayOrder":34},"01a0e1ab-e003-7648-affa-f3dd6379e5d6",{"id":298,"sentenceTemplate":299,"displayOrder":300,"explanation":301,"exampleSentence":302,"blanks":303},"01a0e1ab-e003-78a4-affa-f3dd677af94b","Choose the pair whose two words both fit: “I have not asked __1__ the hotel provides breakfast or not.”",13,"With or not at the end of this clause after asked, both whether and if are possible. That cannot introduce the intended question, and what does not fit before the complete clause the hotel provides breakfast.","Can you find out if the pool is open or not?",[304],{"id":305,"blankNumber":21,"options":306},"01a0e1ab-e003-7834-affa-f3dd670341b8",[307,310,312],{"id":308,"optionText":309,"isCorrect":26,"displayOrder":10},"01a0e1ab-e003-7774-affa-f3dd650709e4","that \u002F if",{"id":311,"optionText":247,"isCorrect":30,"displayOrder":21},"01a0e1ab-e003-77b8-affa-f3dd65a0b1ba",{"id":313,"optionText":314,"isCorrect":26,"displayOrder":34},"01a0e1ab-e003-77f8-affa-f3dd668319dd","whether \u002F what",{"id":316,"sentenceTemplate":317,"displayOrder":318,"explanation":319,"exampleSentence":320,"blanks":321},"01a0e1ab-e003-7b8c-affa-f3dd6bf4b38d","We discussed __1__ we should hire a van, but we still have not decided __2__ to collect the furniture ourselves or pay for delivery.",14,"Discuss takes whether for this yes\u002Fno question, not if or that. Before an infinitive, use whether to, not if to; the final clause presents two explicit alternatives.","The committee discussed whether it should postpone the concert before deciding whether to offer refunds.",[322,331],{"id":323,"blankNumber":21,"options":324},"01a0e1ab-e003-7a00-affa-f3dd699802dd",[325,327,329],{"id":326,"optionText":33,"isCorrect":26,"displayOrder":10},"01a0e1ab-e003-7928-affa-f3dd686cbdbd",{"id":328,"optionText":25,"isCorrect":30,"displayOrder":21},"01a0e1ab-e003-7980-affa-f3dd68d1f174",{"id":330,"optionText":29,"isCorrect":26,"displayOrder":34},"01a0e1ab-e003-79c4-affa-f3dd68e4c190",{"id":332,"blankNumber":34,"options":333},"01a0e1ab-e003-7b20-affa-f3dd6b8b5501",[334,336,338],{"id":335,"optionText":29,"isCorrect":26,"displayOrder":10},"01a0e1ab-e003-7a6c-affa-f3dd699b290f",{"id":337,"optionText":33,"isCorrect":26,"displayOrder":21},"01a0e1ab-e003-7aa8-affa-f3dd6a54d2cd",{"id":339,"optionText":25,"isCorrect":30,"displayOrder":34},"01a0e1ab-e003-7ae8-affa-f3dd6b4bbeb1","\u002Fuploads\u002Fimages\u002Fgpimg_4e5bd3b5-7d5b-4469-af75-b96f5e40e96c_hero.webp?v=1790492532",{"title":342,"slug":343,"language":344,"level":345},"That-Clauses and Whether-Clauses as Complements","that-clauses-and-whether-clauses-as-complements","en","B2"]