must
- You must return these books ________ next Monday, or you will be fined. [ ]
- We must find some books ______ our project. [ ]
- I think she must stay _____ home. [ ]
- You must write a name _____it first. [ ]
- You must tell me the answer ________ the question before they come. [ ]
- You must run ________ the kite. It can fly high. [ ]
- Lily, you must look ______ your clothes. [ ]
- Liu Guozheng must keep the record lifting(举重) .[ ]
- Everyone must make a contribution protecting our environment.[ ]
- You must look around when you go _____ the street.[ ]