35. combine A with B　 结合　　　 apply theory to practice

34. collect sth 收集　 collect money = raise money 募集　

make money = earn money　

have a large collection of　 有…收藏

33. the clue to sth　 线索　 　　　　　thread the clues 把线索串起来

32. my close friend 我亲密的朋友　　　　　 take /have a close looked at 仔细看

make a close study of 仔细研究　　　　　 be close to = be next to 在…附近

be close to 将近，几乎　 He is closer to tears.　 close down 关闭　

close down on 禁止, 取谛

31. My watch keeps the time.　 The watch gains/loses 2 minutes.　

Set the clock to the right by the radio.按照收音机把时间拨准。

30. clear the classroom　　 the clear water 清澈河水　　

clear away 把…清除掉

It is clear that...　　　

Make it clear that...　　　　

Is the road clear ?道路畅通无阻吗？

Please clear the room before their arrival.　　 clear the snow from the path. 　清除　

clear the stones from the garden.　　 clear one's throat 清嗓子　

The clouds have cleared away.云散开。clear up the problem 解决问题It will clear up soon天放

29. classify 分类　 The books in the library are classified according to subject. 按科目分类

28. claim to do　　 claim that　 宣称　 claim sth 认领…　

27. civil rights 公民权力　　 civil duties 公民义务

26. in/under no circumstances = on no account = in no case　 决不=in no way=by no means

Under no circumstances should you lend him any money.in reduced circumstances 艰苦环境下