--“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
推荐题目
----May we leave the classroom now?----No, you         . You           to leave until the bell rings.
#75525
A
mustn’t; are allowed
B
can’t; aren’t allowed
C
don’t have to; are allowed
D
needn’t; aren’t allowed
 If you _____ smoke, please go outside.
#74387
A
can
B
may
C
must
D
might
Tom, you ________ leave all your clothes on the floor like this next time. 
#63404
A
mustn’t
B
wouldn’t
C
needn’t
D
may not