―Is that Miss Liu having dinner over there?―It     be her. She has gone to New York for an important business meeting.
#87968
A
mustn’t
B
needn’t
C
can’t
D
shouldn’t
推荐题目
The light is still on. They ___ to turn it off when they left the room.
#87772
A
must forget
B
could have forgotten
C
may forget
D
must have forgotten
 I insist that he _______ medicine instead of law.
#87926
A
has studied
B
studies
C
should study
D
studied
How lucky he was! He ____ involved in the murder.
#86955
A
must have been
B
can have been
C
could have been
D
would have been