He was late for work this... - 成考高起专英语

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He was late for work this morning because he（）find his key.

mustn' t

wouldn' t

couldn' t

shouldn’ t

正确答案：

句意:他由于找不到钥匙，今天早上上班迟到了。mustn't表示“禁止”； wouldn't表示“不会”；couldn't表示“不能；shouldn't表示“不应该”。根据句意，本题选C 。