20. In my opinion, this is not an economical way to get more water; ____, it is very expensive.

A. on the other hand　 B. on the contrary　 　　　　　　 C. in short　 　　　　　　　 D. or else

19.　 Jenny was very sad over the loss of the photos she had shot at Canada, ____ this was a memory she

especially treasured.

A. as　　　　　　　　　　　　　　 B. if　　　　　　　　　　　　　　　　　　 C. when　　　　　　　　　　　 D. where

18.　 ____ Chinese traditional painting, Sally has come to China to learn how to paint.

A. Adoring　　　　　　 　　 B. To adore　　 　　　　　　　　　 C. Having appealed　 　　 D. Appealing

17. Since everyone would like to find an apartment near the university, there are very few ____ apartments in the area.

A. free　　　　　　　　　　　　　 B. vacant　　　　　　　　　　　　　　 C. empty　　　　　　　　　　　 D. reserved

16. The U.S.A. made a lot of excuses in an attempt to make war on Iran. However, its ____ purpose lay in the plentiful oil there.

A. incredible　　　　　　　　　 B. fundamental　　　　　　　　　　 C. flexible　　　　　　　　　　 D. identical

15.　 ---You ought to have warned him of the danger!

　 　　 --- ____! But he wouldn’t listen!

A. So did I　　　　　　 B. So ought you　　 　　　 C. So I did　　　 　　　　　　　 D. So I have

14.　 The flood is believed ____ more than 50 people and made thousands homeless, ____ it perhaps the most destroying flood in history in the area.

A. killing; to make　　　 　　　　　　　　　　　　　 B. to have killed; making

C. to have killed; having made 　　　　　　　　　 D. having killed; making

13.　 How can you expect to learn anything ____ you devote all your energies to playing computer games?

A. in case　　　　　　　 　　 B. while　　　　　　　　　　　　 C. when　　　　　　　　　　　 D. unless

12. He ____ down his life for the cause of freedom.

A. gave　　　　 　 B. took　　　　 　　　　　 C. killed　　　　　　 　 D. laid　　

11. My most famous relative of all, ____ who really left his mark on America, was Rob Sussel, my great-grandfather.

A. the one 　　　　　　 B. one　　　 　　　　　　 C. he　　　　　　　 　 D. someone