29. A. how to write them　　　　　　　 B. how should you write them

C. what to write them　　　　　　　 D. what to write

28. A. better　　　 　　 B. more difficult　　 　　 C. worse　　　　 D. easier

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

26. A. such a　　　 　　　 B. such an　　　　 　　 C. so a　　　　 　 D. so an

24. ---How far is it from the hotel to ____ university?

---It is just ____ 700-metre walk from here.

A. a , an　　　 B. the , a　　　 C. an , a　　　　 D. the , an

23. 7. I am busy ____ the book and I will try ____ it to you tomorrow.

A. reading , returning　 B. to read, to return　 C. reading , to return　 D. to read, returning

22. Listen! ______　 beautiful music the pianist is playing!

A. How a　　　 　　 B. What a　　 　　 C. What　　　　 D. How

21. More than twenty ______ students are having an important esam at the moment.

A thousands　　 　　 　B thousands of　　 C thousand　　 　　　　 D thousand of

20. .---Where is David？

　　 ---He _______ to Turpan . He _____ the day before yesterday.

A. went , left　　　 B. has gone , left　 C. has been, has left　 D. has left, went