1 . Wind power is an ancient source of energy ________ we may return in the near future.

A．on which

B．from which

C．by which

D．to which

2 . Gun control is a subject________ Americans have argued for a long time.

A．of which

B．with which

C．into which

D．about which

3 . She tells us that Lao Wang is a person ________ we can learn a lot.

A．whom

B．that

C．from whom

D．about whom

4 . 用正确的引导词填空：
1. Yesterday I met the teacher __________ once taught us maths.
2. I will never forget the days __________we work together.
3. Now we have reach a stage __________we have no rights at all.
4. He won first place in the speaking competition, _________excited the whole class.
5. There’s no man ___________ he can turn for help.

5 . I saw a woman running towards me in the dark. Before I could recognize who she was, she had run back in the direction ____ she had come.

A．of which	B．in which
C．from which	D．by which

6 . Do you know the reason _____students are so lazy.

A．that

B．which

C．for which

D．with which

7 . He has got three brothers, ________ is a doctor.

A．all of them	B．none of whom
C．all of whom	D．both of them

8 . Nelson Mandela _________ his life to fighting for a free society________ all people live together in harmony.

A．devoted; which	B．spent; in which
C．devoted; in which	D．spent; where

9 . She doesn’t like the way _______ you speak to her.

A．to

B．in that

C．how

D．in which