---Is Mr Hu in the reading room?---No, he _______be there. He has gone to Tianjin.
#75321
A
mustn’t
B
needn’t
C
won’t
D
can’t
推荐题目
If the students who killed themselves had only been more confident, their deaths ________.
#63688
A
need have been avoided
B
must have been avoided
C
might have been avoided
D
will have been avoided
Alice    be at school because she phoned me from her home a minute ago.
#76102
A
mustn’t
B
isn’t able to
C
may not
D
can’t