21. We often think of the days ______ we spent together on the island.

　　A. when

　　B. which

　　C. in which

　　D. during which

　　22. Have you ever been to Shanghai, ______ I left ten years ago?

　　A. where

　　B. which

　　C. that

　　D. when

　　23. He has left Beijing, ______ a meeting is to be held.

　　A. when

　　B. where

　　C. as

　　D. which

　　24. This is the very place ______ I'm wishing to live in.

　　A. where

　　B. which

　　C. that

　　D. in which

　　25. Is it in that factory ______ "Red Flag" cars are made?

　　A. in which

　　B. where

　　C. that

　　D. which

　　26. I have bought the same dress ______ she is wearing.

　　A. as

　　B. that

　　C. which

　　D. than

　　27. Can you solve such problems ______ raised by the audience?

　　A. what were

　　B. as were

　　C. that were

　　D. which were

　　28. The reason ______ he didn't come was ______ he was injured.

　　A. that, because

　　B. why, that

　　C. why, because

　　D. that, that

　　29. He must be from Africa, ______ can be seen from his skin.

　　A. that

　　B. as

　　C. it

　　D. what

　　30. His father died last year, ______ made it impossible for him to go abroad.

　　A. when

　　B. which

　　C. as

　　D. that

　　参考答案：

　　1-5 ACCBC 6-10 CBDCA

　　11-15 CDCAC 16-20 CDACA

　　21-25 BBBCC 26-30 ABBBB