摘要： 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
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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
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
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