选用“should”“ought to”“had better”“have to”“must”及其否定式填空.
1.She ( ) be treated like that because she was done nothing wrong.
2.-( ) I hand in my homework tomorrow morning?
-No,you needn't.
3.Children ( ) play football in the street.
4.The teather tells us that we ( ) finish our homework first before we begin to watch TV in the evening.