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The sun gives us heat and light, ________ which we can’t live.

2. The student ________ whom we were talking just now is the best student in our class.

5. There are 50 students in their class, most of ________ are from Tonglu.　　　　　　　

There are 50 students in their class, and most of _______ are from Tonglu

4. I have borrowed many books, many of _______ are about music.　　　　　　　　　　　　 　　　　　　　　　　I have borrowed many books, and many of _____ are about music

3.____ is known to everybody, the moon travels round the earth.

_____ is known to everybody that the moon travels round the earth.

2. Can you still think of the village ______________he once worked?

　 Can you still think of the village ______________ he once visited?

1. I will always remember the hours _____________ we lived together.

　 I will always remember the hours ____________ we spent together

19. Look out! Don’t get too close to the house of which roof is under repair. 　

18. The students and things which you spoke of are known to us.

17. Which is known to all, many satellite are going around in the sky.

16. The third place which we are going to visit is Hangzhou.