20、－Jack and David are brothers.

－Oh, I _____ why they looked so alike.

A. was wondering  B. wonder               C. have wondered      D. will wonder

19、I am not sure what his ______ in the comedy is, but I think he will act the part of the hero.

A. role            B. performance                 C. play           D. position

18、You are _____ careful than your brother. You two can’t do the work that needs care and skill.  

A. not more       B. no more             C. not less         D. no less

17、He was not an actor, who often appeared on stage, _____ a writer, writing stories.

    A. but                         B. and                  C. then                        D. so

16、－ Do you think he is lazy？

－ I _____ so once, but I don’t now.

    A. may have thought        B. can have thought      C. may think       D. might think

15、A red sky in the morning _____ to be a sign of bad weather.   

A. says                     B. is saying             C. has said                 D. is said

14、He has written several books, but his last works _____ well known among his friends.

A. have             B. have been            C. is                D. are

13、－ Have you got used to your school life here?

－Yes, but I don’t like _____ when we have to do exercises on cold winter mornings.

A. that              B. it                    C. those             D. this

12、_____ anywhere in the United States costs less than a dollar when you dial it yourself.

A. Three minutes call     B. A three-minutes call  C. Three-minute call      D. A three-minute call

11、The education of ____ young is always ____ hot and serious topic in China.

A. /; /                      B. the; a             C. /;  the                   D. the; /