Whenhesawallhisbooks
来源:语文精选馆 1.97W
问题详情:
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
【回答】
A
知识点:动词时态
题型:选择题