10. Jack ______ leave _____ his teacher comes back.

　A. doesn’t, until　

　B. /, until　

　C. won’t, /　

　D. won’t, until

9. When ______ the car ________?

　A. did, invent　

　B. was, invented　

　C. does, invent　

　D. in, invented

8. It’s used for _____ clearly in the dark.

　A. seeing　

　B. see　

　C. looking 　

　D. look

7. They decided _______ at the end of this month.

　A. to leave　

　B. going back　

　C. travel　

　D. not stat out

6. I don’t like this kind of potato chips because they are not _______.

　A. crispy　

　B. sweet　

　C. soft　

　D. sour

5. The police found the lost car _______.

　A. with mistake　

　B. by accident　

　C. by mistake　

　D. in accident

4. My mother told me that my homework must _______ on time.

　A. finish　

　B. be finish　

　C. be finished　

　D. finished

3. Keys _______ used for ______ the doors.

　A. is, opening　

　B. is, opened　

　C. are, opening　

　D. are opened

2. All the books will _______ to the children who live in the small village.

　A. be sent　

　B. sent　

　C. be send　

　D. send