—Mary’s score on the test is the highest in her class.—Really? She     have studied very hard.
#87447
A
may
B
ought to
C
must
D
should
推荐题目
.---I didn't go to work yesterday because my car broke down. ---You ____ mine. I wasn't using it then.
#89999
A
might borrow
B
could have borrowed
C
must have borrowed
D
ought to borrow
The girl was drowned unfortunately. She ____, though, because there were so many people standing on the banks at that moment.
#86836
A
should have saved
B
could have been saved
C
should be saved
D
couldn’t have been saved
How I wish I _____ history when I was in university.
#86921
A
study
B
studied
C
would study
D
had studied