[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"grammar-exercise-019d3eb5-b564-7492-beb8-0dc78b9e7548":3,"grammar-exercise-lesson-019b84b5-2659-784a-9965-86ec3a2f4271":156},["Reactive",4],{"id":5,"grammarPage":6,"title":7,"instructions":8,"displayOrder":9,"questions":10},"019d3eb5-b564-7492-beb8-0dc78b9e7548","\u002Fapi\u002Fgrammar_pages\u002F019b84b5-2659-784a-9965-86ec3a2f4271","Must and Can't - Mystery Dinner Party","Read each sentence carefully and decide what is possible or impossible.\nClick on each blank and choose the correct answer (must or can’t) from the dropdown menu.\nSome sentences have more than one blank, so make sure you complete all of them.",0,[11,29,44,58,72,86,100,114,128,142],{"id":12,"sentenceTemplate":13,"displayOrder":9,"explanation":14,"exampleSentence":15,"blanks":16},"019d3ec7-0361-7ce3-a883-cc05435e2492","The butler __1__ be the thief because he was serving drinks when the necklace disappeared.","Use 'can't' for deductions when something is logically impossible based on the evidence. The butler has an alibi, so he cannot be the thief.","She can't be at home because I just saw her at the market.",[17],{"id":18,"blankNumber":19,"options":20},"019d3ec7-035f-7a40-acad-6b52502e2596",1,[21,25],{"id":22,"optionText":23,"isCorrect":24,"displayOrder":9},"019d3ec7-035f-767c-acad-6b524ea467df","must",false,{"id":26,"optionText":27,"isCorrect":28,"displayOrder":19},"019d3ec7-035f-7718-acad-6b524f30613f","can't",true,{"id":30,"sentenceTemplate":31,"displayOrder":32,"explanation":33,"exampleSentence":34,"blanks":35},"019d3ec7-0362-70cf-8cf7-65a44628e9ec","Mr. Williams was talking to the host in front of everyone when the theft happened. He __1__ be the thief.",3,"Use 'can't' when something is impossible based on clear evidence. Being seen by everyone at the time of the crime means he could not have done it.","She was on a video call with her team when the incident happened. She can't be responsible.",[36],{"id":37,"blankNumber":19,"options":38},"019d3ec7-0362-7093-8cf7-65a4456ac11e",[39,41],{"id":40,"optionText":23,"isCorrect":24,"displayOrder":9},"019d3ec7-0362-702b-8cf7-65a4441d3ef9",{"id":42,"optionText":27,"isCorrect":28,"displayOrder":43},"019d3ec7-0362-7077-8cf7-65a4453054fa",2,{"id":45,"sentenceTemplate":46,"displayOrder":47,"explanation":48,"exampleSentence":49,"blanks":50},"019d3ec7-0362-71c3-8cf7-65a448ea0903","The gardener __1__ have entered through the front door because it was locked from the inside all night.",4,"Use 'can't' when something is logically impossible. A locked door from inside makes entry through it impossible.","They can't have left by car because their car is still here.",[51],{"id":52,"blankNumber":19,"options":53},"019d3ec7-0362-7173-8cf7-65a448477d90",[54,56],{"id":55,"optionText":23,"isCorrect":24,"displayOrder":9},"019d3ec7-0362-7113-8cf7-65a446ef1edd",{"id":57,"optionText":27,"isCorrect":28,"displayOrder":19},"019d3ec7-0362-7137-8cf7-65a44784825d",{"id":59,"sentenceTemplate":60,"displayOrder":61,"explanation":62,"exampleSentence":63,"blanks":64},"019d3ec7-0362-72bb-8cf7-65a44ab42d57","Lady Pemberton __1__ be lying because her story contradicts the security camera footage.",5,"Use 'must' when evidence strongly suggests something is true. Contradictory stories indicate someone is almost certainly lying.","You must be joking - that story sounds impossible!",[65],{"id":66,"blankNumber":19,"options":67},"019d3ec7-0362-7283-8cf7-65a44a3190ef",[68,70],{"id":69,"optionText":27,"isCorrect":24,"displayOrder":9},"019d3ec7-0362-721f-8cf7-65a449203590",{"id":71,"optionText":23,"isCorrect":28,"displayOrder":19},"019d3ec7-0362-7243-8cf7-65a4495f893f",{"id":73,"sentenceTemplate":74,"displayOrder":75,"explanation":76,"exampleSentence":77,"blanks":78},"019d3ec7-0362-7393-8cf7-65a44c4b8438","The suspect __1__ have stolen the painting because he arrived after it went missing.",6,"Use 'can't' when something is impossible based on timing or facts. Arriving after the theft makes him unable to be the thief.","She can't have taken the keys because she wasn't here yesterday.",[79],{"id":80,"blankNumber":19,"options":81},"019d3ec7-0362-735f-8cf7-65a44c3470df",[82,84],{"id":83,"optionText":23,"isCorrect":24,"displayOrder":9},"019d3ec7-0362-72ff-8cf7-65a44af67cfe",{"id":85,"optionText":27,"isCorrect":28,"displayOrder":43},"019d3ec7-0362-733f-8cf7-65a44b54cfd3",{"id":87,"sentenceTemplate":88,"displayOrder":89,"explanation":90,"exampleSentence":91,"blanks":92},"019d3ec7-0362-746b-8cf7-65a44db496a3","The guest in the blue jacket suddenly left the table just before the lights went out and security cameras show him near the safe. He __1__ be involved.",7,"Use 'must' when behavior strongly suggests something is true. Leaving at a suspicious moment and not returning indicates involvement.","He left the meeting right before the problem started and hasn’t answered any calls. He must know something.",[93],{"id":94,"blankNumber":19,"options":95},"019d3ec7-0362-7437-8cf7-65a44d250aa1",[96,98],{"id":97,"optionText":27,"isCorrect":24,"displayOrder":9},"019d3ec7-0362-73d7-8cf7-65a44c8f1e4b",{"id":99,"optionText":23,"isCorrect":28,"displayOrder":19},"019d3ec7-0362-73f7-8cf7-65a44d034711",{"id":101,"sentenceTemplate":102,"displayOrder":103,"explanation":104,"exampleSentence":105,"blanks":106},"019d3ec7-0362-7657-8cf7-65a452e8d5e1","The witness __1__ be telling the truth, her description matches the security camera footage perfectly.",9,"Use 'must' when evidence strongly confirms something. Matching the video footage makes her story almost certainly true.","His story must be true because it matches what everyone else said.",[107],{"id":108,"blankNumber":19,"options":109},"019d3ec7-0362-761f-8cf7-65a452ab9930",[110,112],{"id":111,"optionText":27,"isCorrect":24,"displayOrder":9},"019d3ec7-0362-75b3-8cf7-65a450c2a904",{"id":113,"optionText":23,"isCorrect":28,"displayOrder":43},"019d3ec7-0362-7603-8cf7-65a451bf59d9",{"id":115,"sentenceTemplate":116,"displayOrder":117,"explanation":118,"exampleSentence":119,"blanks":120},"019d3ec7-0362-77ff-8cf7-65a456e0c43a","Dr. Watson __1__ be the murderer - he was at the hospital performing surgery at the time of death.",11,"Use 'can't' when evidence makes something impossible. Being elsewhere during the crime provides a clear alibi.","He can't be guilty because he was with me the whole evening.",[121],{"id":122,"blankNumber":19,"options":123},"019d3ec7-0362-77c7-8cf7-65a456687568",[124,126],{"id":125,"optionText":23,"isCorrect":24,"displayOrder":9},"019d3ec7-0362-776b-8cf7-65a4553bdc0c",{"id":127,"optionText":27,"isCorrect":28,"displayOrder":19},"019d3ec7-0362-778b-8cf7-65a4557486cc",{"id":129,"sentenceTemplate":130,"displayOrder":131,"explanation":132,"exampleSentence":133,"blanks":134},"019d3ec7-0362-78d3-8cf7-65a4599aa005","The stolen emerald __1__ be in this room because the detector is beeping loudly near the fireplace.",12,"Use 'must' when evidence strongly indicates something. A detector beeping means the emerald is almost certainly nearby.","The keys must be in your bag because I can hear them jingling.",[135],{"id":136,"blankNumber":19,"options":137},"019d3ec7-0362-789f-8cf7-65a458fc649b",[138,140],{"id":139,"optionText":27,"isCorrect":24,"displayOrder":9},"019d3ec7-0362-783f-8cf7-65a457ce225b",{"id":141,"optionText":23,"isCorrect":28,"displayOrder":19},"019d3ec7-0362-7863-8cf7-65a45829b66f",{"id":143,"sentenceTemplate":144,"displayOrder":145,"explanation":146,"exampleSentence":147,"blanks":148},"019d3ec7-0362-7a87-8cf7-65a45fd0e644","The accomplice __1__ be someone at the dinner table because only guests knew about the secret safe.",14,"Use 'must' when logic strongly points to a conclusion. Only guests having the knowledge means the accomplice is almost certainly among them.","The leak must be someone in our team because outsiders don't have this information.",[149],{"id":150,"blankNumber":19,"options":151},"019d3ec7-0362-7a53-8cf7-65a45f636fb8",[152,154],{"id":153,"optionText":27,"isCorrect":24,"displayOrder":9},"019d3ec7-0362-79f7-8cf7-65a45d6d23cb",{"id":155,"optionText":23,"isCorrect":28,"displayOrder":43},"019d3ec7-0362-7a37-8cf7-65a45ead4c88",{"title":157,"slug":158,"language":159},"Must and Can't (Deductions)","must-and-cant-dedcutions","en"]