Very loud noises       make people ill. So we       make great noise.
#76298
A
must ; mustn’t
B
need ; needn’t
C
can ; mustn’t
D
must ; can’t
推荐题目
Mr. Smith has promised that all of us will pass the exam, so it ____ so difficult as you imagine.
#63382
A
can’t have been
B
can’t be
C
mustn’t have been
D
mustn’t be
May I ask you ________ questions?
#76941
A
some
B
any
C
a
D
a little
 —Is Jack on duty today? —It_____ be him. It’s his turn tomorrow.
#62168
A
mustn’t
B
won’t
C
can’t
D
needn’t
—May I swim here?  — No, you _______.  It is dangerous.
#75700
A
won’t
B
needn’t
C
mustn’t
D
don’t have to