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МатематикаВопрос:
29. I'm sorry, I ______ help you right now. I'm doing my homework, my mum called me. a) can, b) can't, c) mustn't
Ответ:
Решение:
Из контекста следует, что говорящий не может помочь, потому что занят. Для выражения невозможности действия используется can't.
Ответ: b) can't
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