—Is Jack on duty today? —It ______ be him. It is his turn tomorrow.
#76227
A
mustn’t
B
won’t
C
can’t
D
needn’t
推荐题目
I set up email addresses for connecting with my parents last May. But I didn’t write to them as often as I ______.
#62865
A
should
B
must have
C
should have
D
must
--The man in a black suit _______ be our youth worker. -- I’m sure it _____ be him. I saw him in the laboratory building some minutes ago.
#74624
A
must; can’t
B
can; mustn’t
C
can; could
D
must; won’t
She ______ have attended that meeting, for she was doing paperwork in the office then.
#62274
A
shouldn’t
B
mustn’t
C
wouldn’t
D
couldn’t
—What do you think of the hotel?—There are no customers in the hotel. It ______ have the friendliest service.
#74917
A
can’t
B
needn’t
C
may
D
must