You _____ read a book in the sun—it'll do harm to your eyes.                      
#63386
A
couldn't
B
wouldn't
C
needn't
D
mustn't
推荐题目
 I felt surprised that anyone of his intelligence   ________  such an easy test.
#62347
A
might have failed
B
could have failed
C
should have failed
D
must have failed
—Hurry up , or you ________ catch the train. 
#75443
A
can’t
B
needn’t
C
mustn’t
D
shouldn’t
This CD _______ belong to Bill. It has his name on it.
#74759
A
mustn’t
B
might
C
can’t
D
must