--- He worked out such different questions at a very young age.--- Oh, he ______ a very smart student then.
#63131
A
could have been
B
should have been
C
might have been
D
must have been
推荐题目
You      drink wine before driving, or the police will take your license away.
#77356
A
don’t have to
B
needn’t
C
mustn’t
D
may not
---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