1) The coat you bought is of very good quality. It ________ have been very expensive. a) can b) must c) can't d) have to 2) This is a very precious book. You _________ lose it! a) have to b) can c) can't d) needn't e) mustn't 3) We ______ hurry. We've got plenty of time. a) can't b) mustn't c) don't have to d) can 4) We have an exam tomorro. We .............. study. a) can b) needn't c) ought d) must 5) You ................ go out at night. It's dangerous. a) can b) mustn't c) don't have to d) have to

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