1.__Can_____we put our coats here?
2.Mother was ill yesterday.She___must____ look after her at home.
3.They are our rules.You _must______ obey them.
4.-May we come a little late?
-No,you__may not____.
5.-__Must____ I finish my homework now?
-No,you needn't.
6._Can______ you help me,please?
7.Don't eat in class.But you _can_____ eat in cafeteria.
8.Your key _may__ be in your pocket.I saw it in the classroom just now.
9.Pizza __must be____ more delicious,I think.
10.You ___should____ study hard because you are a student.