25.　 Which we know, more than seventy percent of the earth is covered with water.

24.　 The man and the horse that who fell into the river were drowned.

23.　 I hope to get such a dictionary that he is using.

22.　 This is the teacher whom we have learnt a lot.

21.　 She is the only one among us that know French.

20.　 Guilin is a city where has a history of 2000 years.

19.　 Nobody wants the house which roof has fallen in.

18.　 There was little which I could do for you.

17.　 This is the house where I lived in two years ago.

16.　 Let me have a look at the dictionary that you bought it yesterday.