13.He______ on the grass, looking at the clouds in the sky.

A. is laying　 　　　　 　　B. has laid　 　　　　　 　　C. was lying　 　　　 　　D. has lied

12. The country life he was used to _______greatly since 1992.

A. change　　　　　　 B. has changed　　　　 C. changing　　 　　　D. have changed

11. ---She isn't a dancing teacher, is she?

---_______.

A. No, but she was.　　　 B. Yes, she isn't　 　 　　C. Yes, she wasn't　　　 D. No, she is

10. Most birds find it safe to sleep in the trees, but _______they have eggs or young chicks, they don’t use a nest.

　 A. why　　　　　　　 B. how　　　　　　　 C. unless　　　　　　 D. where

9. _______ boys and girls in that school are almost equal.

A. A number of　　　　 　　 B. The numbers of　　　　 C. Numbers of　　　　　　　 　　 D. The number of

8. --- Would you like to join us?

--- Sorry, I'm not _______as any of you.

A. so good a player　　　　　　　　　　　　　 B. a player so good

C. a so good player　　　　　　　　　　　　　 D. so a good player

7. Why don’t you just 　　　　your own business and leave me alone? 　 A. make　　　　　 　　　　 B. open　　　　　 　　　　 C. consider　　　　　　 　　 D. mind

6. You have made a mistake --- you have _______ the letter e.

A. left aside　 　　　　 　　B. left alone　 　　　　　　　 　　C. left out　　　　　　 D. left behind

5. News reports say peace talks between the two countries have broken down ______ no agreement reached.　

A. with　　　　　　　 B. as　　　　　　　 　　　　 C. because　　　　　 D. like

4. Every possible means ______to prevent the air pollution, but the sky is still not clear.

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