—I knocked but nobody answered the door. ----They _____asleep then and didn’t hear you.
#88169
A
must be
B
should be
C
must have been
D
should have been
推荐题目
(2013·安徽，28)I________to my cousin's birthday party last night, but I was not available.
#86620
A
went
B
had gone
C
would go
D
would have gone
―Why? Where is the key to the sound lab? ―Dear me! You _______ it in the taxi！
#89994
A
have never left
B
never left
C
haven’t left
D
didn’t leave
Bob insisted that he ________ nothing wrong and ________ from work.
#87118
A
did; won’t be fired
B
had done; not be fired
C
should do; mustn’t be fired
D
do; shouldn’t be fired
As it turned out to be a small house party, we __________ so formally.
#87235
A
needn’t dress up
B
shouldn’t dress up
C
were not necessary to dress up
D
needn’t have dressed up
The professor gave orders that the test ____before 5:30.
#86937
A
be finished
B
will finish
C
will be finished
D
shall finish