—Look! The man at the gate _______be our headmaster. He is always standing there every morning.—No, it_______ be him. He is holding a meeting in the office now.
#74208
A
must; can’t
B
must; mustn’t
C
can’t; can’t
D
can’t; mustn’t
推荐题目
You____Tom at the party yesterday;he went abroad for a holiday last week.
#63294
A
should have seen
B
might have seen
C
mustn’t have seen
D
couldn’t have seen
We        the difficulty together, but why didn’t you tell me?
#63184
A
need have faced
B
can have faced
C
could have faced
D
must have faced