-Listen! Is Mary playing the piano in the room? --No. It ________ be Mary. She has gone to Hong Kong.
#77454
A
may not
B
needn’t
C
can’t
D
mustn’t
推荐题目
This cake is very sweet. You a lot of sugar in it.
#62688
A
should put
B
could have put
C
might put
D
must have put
----Must I finish that work today?----No, you _____. You may finish it in three days.
#74320
A
mustn’t
B
needn’t
C
Shouldn’t
D
couldn’t
---Must I go to medical school and be doctor like you，Dad？--- No, you __________, son. You’re free to make your own decision.
#74745
A
can’t
B
mustn’t
C
shouldn’t
D
don’t have to
--- There is someone at the door. Who ______ it be? Is it the postman?--- No, it ________ be him. It’s just seven o’clock. It’s too early.
#75704
A
may, can’t
B
will, won’t
C
may, mustn’t
D
must, may not
(2013·高考新课标全国卷Ⅱ)Since nobody gave him any help，he________have done the research on his own.
#62474
A
can
B
must
C
would
D
need