15. reading is an experience quite different from watching TV; there are pictures ___ in your mind instead of before your eyes.

A. to form　 B　 form　 C forming　 D having formed

14. you were silly not ___ your car.

A. to lock　 B. to have locked　 C locking　 D having locked

13. the news reporters hurried to the airport, only ____ the film stars had left.

A. to tell　 B to be told　 C. telling　 D told

12. Helen had to shout ____ above the sound of the music.

A.　　 making herself hear　 B to make herself hear

B.　　　 C making herself heard　 D to make herself heard’

11. the old man, ___ abroad for 20 years, is on the way back to his mother land.

A. to work　 B work　 C to have work　 D having work

10. _____ the programme, they have to stay there for another two weeks.

A. not completing　 B . no completed　 C not having completed　 D having not completed　

9. when first ____ to the market, these products enjoyed great success.

A. introducing　 B. introduced　 C. introduce　 D. being introduced

8. You should understand the traffic rule by now, you’ve had it ____ often enough.

A. explaining　　 B. to explain　　 C. explain　 D. explained

7. It’s necessary to be prepared for a job interview. ____ the answers ready will be of great help.

A. to have had　 B. having had　 C. have　 D having

6.　 --- Can the project be finished as planned?

--- Sure, ____ it completed in time, we’ll work two more hours a day.

A. having got　 B to get　 C getting　 D get