1. The student who sits next to me is from China.

-> He chỉ con người nên dùng who.
2. I thanked the woman who had helped me. 

-> The woman chỉ người nên dùng who.

3. The professor whose course I'm taking is excellent.

-> His: chỉ sở hữu nên dùng whose

4. My cousin gave me an instruction book which explains how to use voice recorders.

-> It: chỉ vật nên dùng which

5. I saw a lot of people and horses who went to the market.

-> They chỉ người nên dùng who

6. Do you know the music which is being played on the radio?

-> It chỉ vật nên dùng which.

7. My friend Michael, who hasn't gone to school anymore often comes to play with me.

-> He chỉ người nên dùng who.

8. This book which I bought yesterday is scratched. 

-> It chỉ vật nên dùng which.

9. My presentation which my teacher asked me to make as a video is about global warming.

-> It chỉ vật nên dùng which.

chúc bạn làm bài tốt nhoaaa :}}}}}

N (người) + who + V 

N (vật) + which + V / S +V 

N + whose + N : sở hữu 

---------------------------------------

1. The student who sits next to me is from China.

2. I thanked the woman who had helped me.

3. The professor whose course I'm talking is excellent.

4. My cousin gave me an instruction book which explains how to use voice recorders.

5. I saw a lot of people and horses who went to the market.

6. Do you know the music which is being played on the radio?

7. My friend Michael, who hasn't gone to school anymore, often comes to play with me.

8. This book which I bought yesterday is scratched.

9. My presentation which my teacher asked me to make as a video is about global warming.

`color{orange}{~LeAiFuRuiHuiBao~}`