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When he saw all his books here and there on the floor, he knew that something te

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When he saw all his books here and there on the floor, he knew that something te

When he saw all his books _____ here and there on the floor, he knew that something terrible _____.

A. lying; must have happened B. lie; must happen

C. lay; might have happened D. had lain; could have happen

试题答案

A