选择
1.-________I water the tree on Tuesday?
-No,you needn't.
A.Can
B.Must
C.May
D.Shall
2.Everyone _______do his best to make the world safe and clean
A.can
B.may
C.must
D.had to
3.He ________to the farm yesterday.
A.need go
B.needed go
C.has to go
D.had to go
4.You _________ get down the bus until the bus has stopped.
A.can't
B.needn't
C.mustn't
D.don't
5.-May I stop my car here?
-No,you _______.
A.can't
B.mustn't
C.needn't
D.don't have to
6.Johnny,you _______play with the knife,you _______hurt yourself.
A.won't;can't
B.mustn't;may
C.shouldn't;must
D.can't;shouldn't
7.There was plenty of time.You ________.
A.mustn't hurry
B.mustn't have hurried
C.needn't hurry
D.needn't have hurried
8.-SARS is such a terrible disease.
-Yes,it is.We ________be more careful.
A.can
B.may
C.must
D.need