-- Look at the boy running on the ground. Is it David?-- It _______ be him. I saw him go to the teacher’s office just now.
#77075
A
might
B
could
C
can’t
D
mustn’t
推荐题目
He ________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.
#62950
A
wouldn’t
B
shouldn’t
C
couldn’t
D
mustn’t
—Must I buy lunch at school?—No, you needn’t. You __________ bring your own lunch if you want to.
#75813
A
should
B
must
C
will
D
can
- Must I clean the Lable now? - No, you ____. You may do it later.
#76561
A
can’t
B
needn’t
C
mustn’t
D
shouldn’t
Look at the sign! It says “No Smoking!” You ________ smoke here. It’s dangerous.
#74948
A
mustn’t
B
ought not to
C
needn’t
D
don’t have to