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МатематикаВопрос:
29 George should have/must have studied a lot for the history exam. He got very high marks.
Ответ:
Must have.
Объяснение: "Must have" используется для выражения уверенности в прошлом действии, основанной на его результате.
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- 23 Sue can't have/must have been at the party last night. She's on holiday in Italy right now.
- 24 Karen may/has to leave school early tomorrow. She has a dentist appointment after school.
- 25 If Mary gets permission from her parents, she may/must study in France next year.
- 26 If you want to succeed in life, you should/need to work hard, and always keep to your goals.
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- 28 If your roommates are too noisy, you ought to/need to study at the student library. It's quiet there.
- 30 Students mustn't/needn't run in the school corridors. It's against the rules.
