1. Look! All of your dirty clothes _____ by your mother last night.

　　A. was washed

　　B. washed

　　C. was washing

　　D. were washed

　　2. Do you know that your homework _____ on time?

　　A. must hand in

　　B. must be handed in

　　C. must be handed

　　D. were handed in

　　3. A lot of new schools _____ in our city next year.

　　A. are building

　　B. will be built

　　C. will build

　　D. are built

　　4. These stamps _____ for sending letters.

　　A. are used

　　B. are using

　　C. used

　　D. be used to

　　5. A lot of teachers _____ to work in the west of China next year.

　　A. are asked

　　B. are asking

　　C. will be asked

　　D. will ask

　　6. More and more trees _____ to protect our environment.

　　A. should plant

　　B. should be planting

　　C. should be planted

　　D. must plant

　　7. All of the mistakes in my test paper _____.

　　A. have corrected

　　B. corrected

　　C. have been corrected

　　D. have been correcting

　　8. Look! A tall building _____ in my school now.

　　A. is being built

　　B. is building

　　C. builds

　　D. is built

　　9. Do you know that telephone _____ before the computer?

　　A. is invented

　　B. was invented

　　C. invented

　　D. was inventing

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