16. ----What is behind the tree?

　 ----There must be a dog _________ there.

　 A. to sit　 B. sit　 C. sitting　 D. sits

15. The prisoner _________ the prison. The police are looking for him everywhere.

　 A. is put into　 B. escaped from　 C. chased after　 D. ran away

14. -----It’s strange. I can’t start my computer.

　 ----There __________ something wrong with yout disk.

　 A. might have　 B. might be　 C. must have　 D. can’t be

13. Is there __________ in today’s newspaper?

　 A. something interesting　　　 B. interesting things

　 C. anything interesting　　　　 D. interesting anything

12. ----Do you like to live in a house or in a building?

　 ----I used to _________ in a building. But now I am used to ____________ in a house.

　 A. live, live　 B. live, living　　 C. living, live　　 D. living, living

11.He __________ in his office for he called me from there five minutes ago.

　 A. must be　 B. must is　　 C. can’t　　 D. can’t be

10. I’m looking for my bike. If you have any ideas __________ it might be, please call me.

　 A. where　　 B. what　　 C. when　 D. how

9. He was the only kid __________ the picnic.

　 A. in　 B. at　 C. on　　 D. of

8. You _________ go and ask Meimei. She __________ know the answer.

　 A. must, can　 B. must, may　 C. need, can　 D. can, may

7. Alex wasn’t at home yesterday. He might be __________ his dentist appointment.

　 A. in　 B. for　 C. at　　 D. with