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МатематикаВопрос:
1. Jack has got a headache. He ... sleep well recently. a) can't b) couldn't have c) hasn't been able to
Ответ:
c) hasn't been able to.
Объяснение: Здесь нужно использовать перфектную форму, так как речь идет о действии, которое произошло недавно и имеет последствия в настоящем.
Похожие
- 2. I ... sleep for hours when I was a little girls. a) could b) am able to c) can
- 3. Tom ... play tennis well but he ... play a game yesterday because he was ill. a) couldn't, could b) can, was able c) can, couldn't
- 4. I didn't want to be late for the meeting. We ... meet at 5 sharp. a) were to b) had to c) could
- 5. Where are my gloves? - I ... put them on because it's cold today. a) can't b) have to c) needn't
- 6. You ... take an umbrella today. The Sun is shining. a) needn't b) mustn't c) can't
- 7. I'm sorry, you didn't invite me to your birthday party. You ... invite me next time. a) must b) should c) need to
- 8. Well, it's 10 o'clock. I ... go now. a) can b) has to c) must
- 9. You ... smoke so much. a) would
