3.[解析] 选D。题意为：对于我们来说老师总能够让他的课生动有趣。此题考查相近词的应用差异。lovely意为“美丽的可爱的” ，living意为“活着的，健在的，现行的”， live 意为“活的，现场直播的”， lively意为“活泼的，有生气的”。根据句意和它们之间的用法差别，应选D。

2.[解析] 选C。题意为：自从我们初中毕业已经六年了。考查固定句式 It is / has been +时间段 +since +主语+动词过去式。故选C。

1.[解析] 选A。题意为：上周我参加了运动会中的800米跑比赛。此题考查复合形容词作定语的应用。其构成结构为 数词 +连字符号+名词单数+连字符号+形容词。故选A。

15. When I was at college , I _____ two foreign languages but I _____ most now ..

A. learnt; had forgotten　 B. learnt ; have forgotten 　

C. have learnt ; forgot　 D have learnt ; have forgotten

14.She ____ the book for 2 weeks .

　A. has lent　 B. has borrowed　 C. has bought　 D. has kept

13. If I ___ the answer to the question , I ____　 you..

A. know; would tell　 B. would know; 　would tell

C. knew ; would tell 　D. know ; tell

12. I’m afraid I can’t ____ such an expensive house .

A. afford　 B. hope C. expect D. offer

11. The price of the radio ____ , and I don’t know the reason.

A. went up　 B .has gone up 　C. had gone ip　 D. will go up　

10. ---When shall we start tomorrow?.

---Let’s ___ it at 8:00. OK?

A. set 　B. meet　 C. take D. make

9. We should pay much attention to ______ people’s living conditions.

A. improve　 B. improved　 C. improving　 D. improvement