—Listen! Is Mary singing in the next room?—No. It _______ be Mary．She has gone to Shanghai for an important meeting.
#74311
A
can’t
B
may not
C
mustn’t
D
needn’t
推荐题目
The pay phone is _____Green Street and it’s across ______ the library.
#77206
A
in, to
B
on, from
C
at, through
D
by, of
You _______ write the poem down. Our teacher will give us a copy.
#74599
A
can’t
B
shouldn’t
C
needn’t
D
mustn’t
We can hardly believe that an intelligent person like Daniel ________ be asking such a silly question.
#62552
A
should
B
might
C
must
D
could
--“Where is Tom?”--“He hasn’t come to school today, I think he ______be ill.”
#75870
A
has to
B
should
C
may
D
can