She looks quite young _____ her age.

A. at 　　 B. by　　　 C. for　　 D. to

___you like him or not is none of my business.

A. who　　　 B. That　　　　 C. What　　　 D. Whether

As everyone knows, smoking a_________a person’s health.

Bill suggested _____ a meeting on what to do for the Shanghai Expo during the vacation.

A. having held　　 B. to hold　　　　　 C. holding　　　　 D. hold

I spent several minutes _______ his puzzling word.（ ）

A. making up　　　　　　　　　 B. to make out

C. figuring out　　　　　　　　　 D. to figure out

One day we will manage to _____the world ______this terrible disease.
A. rid, from      B. rid, of      C. rid, out       D. rid, in

------Oh, I`m extremely sorry _______you so much trouble.
   -------Not at all.
  A. to give      B. giving      C. having been given     D. to have given

Without the sun,none of the living things on earth__________.?

A.existed?

B.would exist?

C.would have been existed?

D.exists?

This is _____ best kind of _____ pen you can get here.

A. the, the　　　　　　　　 B. the, a

C. the, 不填　　　　　　　　 D. a, the