If you _______ carry with you the belief that all you do is right, it’s none of my business.   
#63245
A
should
B
may
C
can
D
must
推荐题目
–What do you think the noise was? --It ___________ a cat.
#63484
A
may be
B
might be
C
can have been
D
might have been
—Must I finish my homework now?—No, you _______.
#78209
A
mustn’t
B
may not
C
needn’t
D
don’t