16. The pen I _______ I _______is on my desk, right under my nose.

A. think; lost　　　　 B. thought; had lost　　 C. think; had lost　　 D. thought; have lost

15. When Jack arrived, he learned Mary ______ for almost an hour.

A. had gone 　　　 B. had set off　　　　　　 C. had left　　　　　　　 D. had been away

14. When I return to the classroom, I found my pen ________.

A. going　　　　　　　 B. losing　　　　　　　　　 C. missing　　　　　　　 D. missed

13. By the time I see you again, I _______ from that school.

A. have graduated 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 B. graduated

C. will have graduated　　　　　　　　　　　　　 D. graduate

12. The case with the lost boy ________ by the police at present.

A. looking out 　　　　　　　　　　　　　　　　　 B. is being looked into

C. is being looked out　　　　　　　　　　　　　 D. looked into

11. She is said to ________ abroad. But I don’t know which country she stayed in.

A. studying　　　　　 B. study　　　　　　　　　　 C. be studying　　　　 D. have studied

10. Can you produce any evidence to _______ what you said?

A. make up　　　　　 B. explain　　　　　　　　 C. support　　　　　　　 D. tell

9. Cats are similar _______ tigers _______ several ways.

A. with; to 　　　　 B. to; in 　　　　　　　　　 C. in; to　　　　　　　　　 D. on; with

8. – Why does she look so tired?

　 -- She ________ all the morning and she still hasn’t finished it.

A. cleaned　　　　　 B. was cleaning　　　　 C. has been cleaning D. has cleaned

7. His success is due to ________.

A. work hard　　　　 B. hard work　　　　　 C. study hard　　　　　 D. work hardly