— __________ we leave the library before 5 o’clock?— No, you needn’t. You can stay here until 5:30. 
#74504
A
Must
B
May
C
Can
D
Could
推荐题目
 —________I complete so much my homework now?— No, you ________.You can do it after supper.
#74934
A
May; ought not to
B
Should; can’t
C
Can; mustn’t
D
Must; needn’t
You _________ to the meeting this afternoon if you have something important to do . 
#76135
A
needn’t to come
B
don’t need come
C
don’t need coming
D
needn’t come