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 【查看更多】
题目列表(包括答案和解析)
When he saw all his books _____ here and there on the floor, he knew that something terrible _____.
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A. lying; must have happened B. lie; must happen C. lay; might have happened D. had lain; could have happen
