If you ________ smoke in the room, please keep the windows open.
#63062
A
should
B
may
C
shall
D
must
推荐题目
 Martin hasn't got in touch with me for ages. He ________ my new cell phone number.
#62322
A
can't get
B
mustn't get
C
can't have got
D
shouldn't have got
I was really anxious about you. You______ home without a word.
#63295
A
mustn’t leave
B
shouldn’t have left
C
couldn’t have left
D
needn’t leave
You have finished most of the work, so you ______ start working so early tomorrow. You ______ come at 9:00.
#74558
A
can’t ; may
B
mustn’t ; can
C
needn’t ; may
D
couldn’t ; can