1. John is a very kind-hearted man. You can turn to him for help.

15. He bought a book yesterday, the author ________ which is a teacher.

(B) 把下列各句子合并成一句。

14. The desk ________ which Jack is leaning is John’s.

13. Ours is a beautiful school, ________ which we are proud.

12. Do you know the building ________ which is flying a red flag?

11. His bike ________ which he went to work was stolen last night.

10. The age _______ which children can go to school is seven.

9. I was surprised at the way ________ which he treated the old man.

8. In the dark street, there wasn’t a person ________ whom she could turn for help.

7. My glasses, _______ which I was like a blind man, fell to the ground and broke.