20. The old sick lady entered the hospital, 　　　　her two sons.　

A. to support　 　　 B. supporting 　　 C. supported by　 　　 D. having supported

非谓语动词强化训练

19. 　　　 　many times, he still couldn't understand.　

A. Having been told　　　 B. Having told 　 C. He having been told D. Telling

18. Many things 　　　　　impossible in the past are very common today.

A. consider　 　　　 B. considering 　 C. considered　 　　 D. be considered

17. The students in the university are all taking courses 　　　a degree.　

A. coming to　　 B. going to　 　 C. leading to　　 D. turning to

16. 　　different kinds of pianos, the workers farther improved their quality　

A. To produce　 　 B. Being produced 　　 C. Produced 　 　　 D. Having produced

15. A person 　　a foreign language must be able to use the foreign language 　　　all about his own.　

A. to learn, to forget 　　　　　　　B. learning, to forget　

C. to learn, forgetting　 　　　　　D. learning, forgetting

14. The wallet 　　several days ago was found 　　in the dustbin outside the building.　

A. stolen, hidden　　　　 B. stealing, hiding　　　 C. stealing, hidden　 　 D. stolen, hiding

13. Lessons 　　　　　easily were soon forgotten.　

A. to learn　　　　　 B. learn　 　 C. learned　　　 D. learning

12. The ground is 　　　　with 　　　　　leaves.　

A. covering, falling 　　 　B. covered, falling　 C. covered, fallen 　D. covering, fallen

11. The library's study room is full of students 　　　　　for the exam.

A. busily prepared　 B. busy preparing　C. busyly prepare 　D. are busily preparing