The room is in a terrible mess; it ________have been cleaned.
#63479
A
can’t
B
mustn’t
C
shouldn’t
D
wouldn’t
推荐题目
---May we go home mow ? --- No, you____. You____ to go home until 5 o’clock.
#78057
A
mustn’t; are allowed
B
don’t have to; are supposed
C
needn’t; aren’t allowed
D
can’t; aren’t supposed
Mary _______ her mother with the housework, but she didn’t.
#63072
A
must have helped
B
ought to have helped
C
must help
D
should help