He commanded that all the gates _____when it was getting dark in case thieves came in .   
#86782
A
were shut
B
must be shut
C
could be shut
D
be shut
推荐题目
 You _______ an A on your term paper, but you quoted a little bit more from others' papers.
#87474
A
should receive
B
could have received
C
would receive
D
must have received
He _______ the best person you had been expecting for the job, but who else _______?
#87031
A
may not be; could be
B
couldn’t be; might be
C
might not have been; could have been
D
mustn’t be; must have been