[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"grammar-exercise-019d4e1a-f72d-77bf-ab7a-72bf97ca4b8e":3,"grammar-exercise-lesson-019ba8b8-bc3e-7662-8e7a-4c432325ad08":240},["Reactive",4],{"id":5,"grammarPage":6,"title":7,"instructions":8,"displayOrder":9,"questions":10},"019d4e1a-f72d-77bf-ab7a-72bf97ca4b8e","\u002Fapi\u002Fgrammar_pages\u002F019ba8b8-bc3e-7662-8e7a-4c432325ad08","Modals in the Past - Regrets and Missed Opportunities","This is a fill-in-the-blank exercise. Click on each blank and choose the correct answer from the dropdown. Use modals in the past (e.g., must have, might have, could have, should have, can’t have) to express deduction, possibility, criticism, or regret about past situations. Some sentences may have more than one blank, so make sure you complete all of them.",0,[11,33,52,71,90,109,128,147,166,185,204,223],{"id":12,"sentenceTemplate":13,"displayOrder":9,"explanation":14,"exampleSentence":15,"blanks":16},"019d4e1c-09a4-7d90-874a-a1ea3d464987","I __1__ harder for that promotion instead of assuming I would get it automatically.","Use 'should have + past participle' to express regret or criticism about a past action that did not happen. 'Must have' expresses deduction, not regret, and 'could work' refers to present or future ability, not past regret.","She should have applied for the scholarship when she had the chance.",[17],{"id":18,"blankNumber":19,"options":20},"019d4e1c-09a2-7b22-abe5-d29998b5d92b",1,[21,25,29],{"id":22,"optionText":23,"isCorrect":24,"displayOrder":9},"019d4e1c-09a2-7762-abe5-d299977abdbd","should have worked",true,{"id":26,"optionText":27,"isCorrect":28,"displayOrder":19},"019d4e1c-09a2-77fe-abe5-d29997ccc298","must have worked",false,{"id":30,"optionText":31,"isCorrect":28,"displayOrder":32},"019d4e1c-09a2-784e-abe5-d299985c44ff","could work",2,{"id":34,"sentenceTemplate":35,"displayOrder":36,"explanation":37,"exampleSentence":38,"blanks":39},"019d4e1c-09a5-71a9-91da-b0510608616d","She __1__ her own business years ago when she had the capital and the contacts.",3,"Use 'should have + past participle' to express regret about a missed opportunity or a past action that would have been the right thing to do. 'Must have' expresses deduction, and 'would have' expresses a hypothetical result, not regret.","He should have taken that overseas assignment when it was offered to him.",[40],{"id":41,"blankNumber":19,"options":42},"019d4e1c-09a5-7165-91da-b051055bc89b",[43,46,49],{"id":44,"optionText":45,"isCorrect":28,"displayOrder":9},"019d4e1c-09a5-7101-91da-b05102b13f4a","must have started",{"id":47,"optionText":48,"isCorrect":28,"displayOrder":19},"019d4e1c-09a5-7125-91da-b0510369df8d","would have started",{"id":50,"optionText":51,"isCorrect":24,"displayOrder":32},"019d4e1c-09a5-7145-91da-b0510466673c","should have started",{"id":53,"sentenceTemplate":54,"displayOrder":55,"explanation":56,"exampleSentence":57,"blanks":58},"019d4e1c-09a5-7295-91da-b051097421f3","They __1__ about the merger before it was announced because they sold all their shares the week before.",4,"Use 'must have + past participle' to express a strong deduction or logical conclusion about a past event based on evidence. 'Should have known' expresses criticism, and 'could have known' expresses possibility, neither of which conveys the logical certainty indicated by the evidence.","She must have received my email because she mentioned the details in her reply.",[59],{"id":60,"blankNumber":19,"options":61},"019d4e1c-09a5-7259-91da-b051093b913b",[62,65,68],{"id":63,"optionText":64,"isCorrect":28,"displayOrder":9},"019d4e1c-09a5-71ed-91da-b0510703f3f7","should have known",{"id":66,"optionText":67,"isCorrect":24,"displayOrder":19},"019d4e1c-09a5-7211-91da-b05107b65114","must have known",{"id":69,"optionText":70,"isCorrect":28,"displayOrder":32},"019d4e1c-09a5-7231-91da-b051083df186","could have known",{"id":72,"sentenceTemplate":73,"displayOrder":74,"explanation":75,"exampleSentence":76,"blanks":77},"019d4e1c-09a5-7389-91da-b0510be31e44","I __1__ that course in digital marketing when I had the chance; now I am struggling to keep up with industry changes.",5,"Use 'ought to have + past participle' to express regret or criticism about a past action that did not happen. It has a similar meaning to 'should have'. 'Might have' expresses speculation, and 'can't have' expresses impossibility or strong negative deduction.","We ought to have invested more in staff training before launching the new system.",[78],{"id":79,"blankNumber":19,"options":80},"019d4e1c-09a5-734d-91da-b0510b8b7cf6",[81,84,87],{"id":82,"optionText":83,"isCorrect":28,"displayOrder":9},"019d4e1c-09a5-72e9-91da-b05109eb9a20","might have taken",{"id":85,"optionText":86,"isCorrect":24,"displayOrder":19},"019d4e1c-09a5-730d-91da-b0510a185337","ought to have taken",{"id":88,"optionText":89,"isCorrect":28,"displayOrder":32},"019d4e1c-09a5-7331-91da-b0510b115a17","can't have taken",{"id":91,"sentenceTemplate":92,"displayOrder":93,"explanation":94,"exampleSentence":95,"blanks":96},"019d4e1c-09a5-7469-91da-b0510e6ccc53","He __1__ the warning signs that the company was in financial trouble, but he chose to ignore them.",6,"Use 'could have + past participle' to express a past ability or opportunity that existed but was not acted upon. 'Must have noticed' expresses deduction, and 'would have noticed' expresses a hypothetical result, not a missed opportunity.","You could have asked for help instead of struggling alone with the project.",[97],{"id":98,"blankNumber":19,"options":99},"019d4e1c-09a5-7431-91da-b0510d8f01c1",[100,103,106],{"id":101,"optionText":102,"isCorrect":28,"displayOrder":9},"019d4e1c-09a5-73d1-91da-b0510c1d4e9b","must have noticed",{"id":104,"optionText":105,"isCorrect":24,"displayOrder":19},"019d4e1c-09a5-73f5-91da-b0510cad7af8","could have noticed",{"id":107,"optionText":108,"isCorrect":28,"displayOrder":32},"019d4e1c-09a5-7415-91da-b0510cdc2c74","would have noticed",{"id":110,"sentenceTemplate":111,"displayOrder":112,"explanation":113,"exampleSentence":114,"blanks":115},"019d4e1c-09a5-755d-91da-b05111e8d6e8","It's possible that the interview __1__ better if I had prepared more thoroughly.",7,"Use 'might have + past participle' to express a past possibility that did not happen, often in hypothetical contexts. 'Must have gone' expresses deduction, and 'should have gone' expresses obligation or expectation, neither of which fits the speculative context.","The negotiation might have succeeded if both sides had been more flexible.",[116],{"id":117,"blankNumber":19,"options":118},"019d4e1c-09a5-7525-91da-b051113ad7e9",[119,122,125],{"id":120,"optionText":121,"isCorrect":28,"displayOrder":9},"019d4e1c-09a5-74c1-91da-b0510f31a719","must have gone",{"id":123,"optionText":124,"isCorrect":24,"displayOrder":19},"019d4e1c-09a5-74e5-91da-b05110000137","might have gone",{"id":126,"optionText":127,"isCorrect":28,"displayOrder":32},"019d4e1c-09a5-7509-91da-b0511077abd4","should have gone",{"id":129,"sentenceTemplate":130,"displayOrder":131,"explanation":132,"exampleSentence":133,"blanks":134},"019d4e1c-09a5-7635-91da-b05113461363","We __1__ so much on that conference; the networking opportunities turned out to be minimal.",8,"Use 'needn't have + past participle' to express that a past action was unnecessary but was done anyway. 'Shouldn't have' expresses criticism about a wrong action, and 'mightn't have' is rarely used and does not fit this context of unnecessary action.","They needn't have hired extra staff for the project; the existing team could have managed it.",[135],{"id":136,"blankNumber":19,"options":137},"019d4e1c-09a5-75fd-91da-b05113446696",[138,141,144],{"id":139,"optionText":140,"isCorrect":24,"displayOrder":9},"019d4e1c-09a5-75a1-91da-b05111f708b2","needn't have spent",{"id":142,"optionText":143,"isCorrect":28,"displayOrder":19},"019d4e1c-09a5-75c1-91da-b05112e91c5c","shouldn't have spent",{"id":145,"optionText":146,"isCorrect":28,"displayOrder":32},"019d4e1c-09a5-75e1-91da-b05113059395","mightn't have spent",{"id":148,"sentenceTemplate":149,"displayOrder":150,"explanation":151,"exampleSentence":152,"blanks":153},"019d4e1c-09a5-7721-91da-b05115e5669b","She __1__ the opportunity to study abroad, but family obligations kept her at home.",9,"Use 'would have + past participle' to express a hypothetical past action that was prevented by circumstances. 'Must have' expresses deduction, and 'should have' expresses regret or criticism, neither of which captures the hypothetical nature blocked by external factors.","I would have accepted the transfer to London, but my partner couldn't relocate.",[154],{"id":155,"blankNumber":19,"options":156},"019d4e1c-09a5-76e9-91da-b051154ccfa6",[157,160,163],{"id":158,"optionText":159,"isCorrect":24,"displayOrder":9},"019d4e1c-09a5-767d-91da-b05113d96424","would have taken",{"id":161,"optionText":162,"isCorrect":28,"displayOrder":19},"019d4e1c-09a5-76a9-91da-b051148321c7","must have taken",{"id":164,"optionText":165,"isCorrect":28,"displayOrder":32},"019d4e1c-09a5-76c9-91da-b0511494568c","should have taken",{"id":167,"sentenceTemplate":168,"displayOrder":169,"explanation":170,"exampleSentence":171,"blanks":172},"019d4e1c-09a5-77fd-91da-b051171ead0f","You __1__ more assertive during the salary negotiation; you settled for far less than you deserved.",10,"Use 'should have + past participle' to express criticism or regret about a past action or behavior. 'Could have been' expresses possibility without the critical tone, and 'might have been' expresses speculation rather than criticism.","He should have been more proactive in seeking feedback from his supervisor.",[173],{"id":174,"blankNumber":19,"options":175},"019d4e1c-09a5-77c9-91da-b0511716224b",[176,179,182],{"id":177,"optionText":178,"isCorrect":28,"displayOrder":9},"019d4e1c-09a5-7765-91da-b05116a3d2ab","could have been",{"id":180,"optionText":181,"isCorrect":24,"displayOrder":19},"019d4e1c-09a5-7789-91da-b05116f2dec4","should have been",{"id":183,"optionText":184,"isCorrect":28,"displayOrder":32},"019d4e1c-09a5-77a9-91da-b05117054d21","might have been",{"id":186,"sentenceTemplate":187,"displayOrder":188,"explanation":189,"exampleSentence":190,"blanks":191},"019d4e1c-09a5-78d9-91da-b0511924753d","They __1__ the contract before signing it; now they are stuck with unfavorable terms for three years.",11,"Use 'ought to have + past participle' to express regret or criticism about a past action that should have been done but was not. 'Must have reviewed' expresses deduction, and 'would have reviewed' expresses a hypothetical result, not regret or criticism in this context.","She ought to have consulted a lawyer before agreeing to those partnership terms.",[192],{"id":193,"blankNumber":19,"options":194},"019d4e1c-09a5-789d-91da-b05119012fd4",[195,198,201],{"id":196,"optionText":197,"isCorrect":28,"displayOrder":9},"019d4e1c-09a5-7841-91da-b051179939b6","must have reviewed",{"id":199,"optionText":200,"isCorrect":24,"displayOrder":19},"019d4e1c-09a5-7861-91da-b0511811147e","ought to have reviewed",{"id":202,"optionText":203,"isCorrect":28,"displayOrder":32},"019d4e1c-09a5-7881-91da-b051183e8cb1","would have reviewed",{"id":205,"sentenceTemplate":206,"displayOrder":207,"explanation":208,"exampleSentence":209,"blanks":210},"019d4e1c-09a5-79b5-91da-b0511ca10166","I __1__ my resignation letter so hastily; I should have waited to see if conditions improved.",12,"Use 'shouldn't have + past participle' to express regret or criticism about a past action that was wrong or unwise. 'Needn't have' expresses that a past action was unnecessary, even though it was done, and 'can't have' expresses impossibility or strong negative deduction.","They shouldn't have dismissed the proposal without proper consideration.",[211],{"id":212,"blankNumber":19,"options":213},"019d4e1c-09a5-7981-91da-b0511bcfc0ab",[214,217,220],{"id":215,"optionText":216,"isCorrect":24,"displayOrder":9},"019d4e1c-09a5-791d-91da-b05119ee13df","shouldn't have submitted",{"id":218,"optionText":219,"isCorrect":28,"displayOrder":19},"019d4e1c-09a5-7941-91da-b0511accf1f7","needn't have submitted",{"id":221,"optionText":222,"isCorrect":28,"displayOrder":32},"019d4e1c-09a5-7961-91da-b0511b07da4d","can't have submitted",{"id":224,"sentenceTemplate":225,"displayOrder":226,"explanation":227,"exampleSentence":228,"blanks":229},"019d4e1c-09a5-7b75-91da-b05122082bd8","The project __1__ much more successful if we had allocated sufficient resources from the beginning.",14,"Use 'could have + past participle' to express a past possibility or potential outcome that did not happen. 'Should have been' expresses expectation or obligation, and 'must have been' expresses deduction, neither of which expresses an unrealized past possibility.","The launch could have been much smoother if we had tested the system more thoroughly.",[230],{"id":231,"blankNumber":19,"options":232},"019d4e1c-09a5-7b41-91da-b051218d0845",[233,235,237],{"id":234,"optionText":181,"isCorrect":28,"displayOrder":9},"019d4e1c-09a5-7ae1-91da-b0511f426d86",{"id":236,"optionText":178,"isCorrect":24,"displayOrder":19},"019d4e1c-09a5-7b01-91da-b0511fc66c4d",{"id":238,"optionText":239,"isCorrect":28,"displayOrder":32},"019d4e1c-09a5-7b21-91da-b05120aadf53","must have been",{"title":241,"slug":242,"language":243},"Modals in the past","modals-in-the-past","en"]