—Will you please answer the door? It ________ be your sister.—Sorry, I ________. I’m feeding the rabbit.
#74502
A
must; mustn’t
B
may; can’t
C
will; can’t
D
must; needn’t
推荐题目
Is there _______________ to sleep for half a day?
#77754
A
somewhere enough silent
B
somewhere silent enough
C
enough silent somewhere
D
anywhere silent enough
If prices rise too high, the government has to do something _________ it.
#77944
A
stop
B
stopped
C
stopping
D
to stop
A hard-working man _____ become a great scientist, but a great scientist _____ be a hard-working man.
#75893
A
can’t, can
B
may not, can
C
can’t, must
D
may not, must
Boys, you ______ be sitting in this room. It is for your teachers only.
#76759
A
shouldn’t
B
don’t have to
C
won’t
D
needn’t
—How did you like the concert last night ?—I enjoyed it very much, but the dancers _____ a better job．
#63517
A
could have done
B
must have done
C
could do
D
had done