21. With trees, flowers and grass ____ everywhere, my native town had taken on a new look.

　 A. planting　 B. planted　 C. to plant　　 D. to be planted

20. She set out soon after dark ____ home an hour later.

　 A. arriving　 B. to arrived C. having arrived D. and arrived

19. The salesman scolded the give caught ____ and let her off.

　 A. to have stolen　 B. to be stealing　 C. to steal　 D. stealing

18. The speaker raised her voice but still couldn’t make herself ______.

　 A. hear　 B. being hearing　　 C. to hear　　 D. heard

17. The computer center, ___ last year, is very popular among the students in this school.

　 A. open　　 B. opening　　 C. having open　 D. opened

16. Most of the artists ___ to the party were from South Africa.

A. invited　　　　 　　　B. to invite C. being invited　　　　 D. had been invited

15. She’s upstairs ____ letters.

　 A. writes　　 B. is writing　 C. write　 D. writing

14. What’s the language ___ in Germany.

　 A. speaking　 B. spoken　 C. be spoken　 D. to speak

13. The next morning she found the man ___ in bed dead.

　 A. lying　 B. lie　　 C. lay　　 D. laying

12. The first textbooks __ for teaching English as a foreign language came out in the 16th century.

　 A. having written　　　 B. to be written　 C. being written　　　　 D. written