26. The problem requires ______.

　　 A. studying with great care　　　　　　　　　 B. to study carefully

　　 C. to be studied without carelessness　　　　　 D. taking great care of studying it

25._____, she burst into tears.

　　 A. Deeply moved　　　　　　　　　　　　 B. Deeply moving

　　 C. As she deeply moved　　　　　　　　　 D. As she was deeply moving

24. I couldn't help _____ when I heard the joke.

　　 A. being laughed　　　　 B. laughing　　　　　 C. to be laughing　　　 D. to laugh

23. She was noticed ______ the shop.

　　　 A. to enter　　　　　　 B. enter　　　　　　　 C. having entered　　　 D. entered

22. I remember _____ someone ____ the umbrella away.

A. to see, take　　 　　　　　　　　　　　　　　　　　　　 B. having seen, to take 　　　　

C. to see, to take　　　 　　　　　　　　　　　　　　　　 D. having seen, take

21. The noise of the desks _____ could be heard in the next classroom.

　　　 A. being opened and closed　　　 　　　　　　B. opened and closed

　　　 C. having been opened and closed　　　　　 D. to be opened and closed

20. The old man didn't know whether to sell the car or____ .

　　　 A. being kept for later use　　　　　　　　　　 B. kept for later use

　　　 C. to keep it for later use　　　　　　　　　　 D. to be kept it for later use

19. Mr. Brown said that his car needed

　　　 A. to be repaired　　　 B. being repaired　　　 C. be repairing 　　　　D. to repair

18. Tom had no choice but _____ the classroom with his classmates.

　　 A. to clean　　　　　　 B. clean　　　　　　　 C. cleaning　　　　　 D. cleans

17. Bob should love _____ to the party tomorrow evening.

　　 A. taking　　　　　　 B. to be taken　　　　　 C. to take　　　　　　 D. being taken