When he saw all his books _____ here and there on the floor, he knew that something terrible _____. 
#88903
A
lying; must have happened
B
lie; must happen
C
lay; might have happened
D
had lain; could have happen
推荐题目
When you _____ into the gallery, you feel as if you____ inside a fragile, white seashell.
#87021
A
walking, are
B
walked, were
C
walks, are
D
walk, were
Did you predict that many students ______ up for the dance competition?
#87681
A
would sign
B
signed
C
have signed
D
had signed
I didn't expect that so many people ___ to join in the work.
#89052
A
had offered
B
were offered
C
would offer
D
used to offer