17. Antarctic _____ we know very little is covered with thick ice all the year round.

A. which B. where C. that D. about which

18. It’s the third time _____ late this month.

A. that you arrived B. when you arrived C. that you’ve arrived D.when you’ve arrived

19. He often helps the students _____ he thinks are not quick at their studies.

A. whom B. who C. when D. because

20. The Second World War _____ millions of people were killed ended in 1945.

A. when B. during that C. in which D. which

21. He was born in the year _____ the Anti-Japanese War broke out.

A. which B. when C. on which D. during which

22. Mr. Crossett will never forget the day _____ he spent with his various students.

A. when B. which C. during which D. on which

23. This is just the place _____ I am longing to visit these years.

A. that B. where C. in which D. to where

24. We are going to spend the Spring festival in Guangzhou, _____ live my grandparents and some relatives.

A. which B. that

C. who D. where

25. The hotel _____ during our holidays stands by the seaside.

A. we stayed at B. where we stayed at

C. we stayed D. in that we stayed

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

A. as B. that

C. which D. than

27. He is not _____ a fool _____.

A. such/as he is looked B. such/as he looks

C. as/as he is looked D. so/as he looks

28. Is that the reason _____ you are in favor of the proposal?

A. which B. what

C. why D. for that

29. Some of the roads were flooded, _____ made our journey more difficult.

A. which B. it

C. what D. that

30. He must be from Africa, _____ can be seen from his skin.

A. that B. as

C. who D. what

答案：

1-5 CADAB 6-10 DABDC 11-15 ADCAC 16-20 ADCBC  21-25 BBADA  26-30 ABCAB

大家及时练习定语从句专项训练题可以帮助大家在最短的时间内巩固学习，大家只要坚定信念向前一定能取得优异的成绩。

相关链接

高一新人教版英语Unit5重点句子讲解 

新人教版高一英语Unit5短语归纳总结