I. Who
1. The girl is Jane. She studied at university three years ago.
-> The girl________________________________________________
2. A girl was injured in the accident. She is now in hospital
-> A girl__________________________________________________
3. There's the boy. He broke the window.
-> There is the boy__________________________________________
4. The man was sick. He looked very pale.
-> The man________________________________________________
5. The man is playing tennis. He is a famous player.
-> The man________________________________________________
6. The man is talking to my father. He spent 15 minutes measuring our kitchen.
-> The man________________________________________________
7. The children went to New York. They speak English.
-> The children________________________________________________
8. The woman is standing over there. She is my sister.
-> The woman________________________________________________
9. The boys came late. They were punished.
-> The boys________________________________________________
10. There are the policemen. They caught the thief.
-> There are the policemen____________________________________
II. Which
1. The book is on the table. It is mine.
-> The book________________________________________________
2.The letter hasn't arrived yet. I posted it three days ago.
-> The letter________________________________________________
3. The sweets are delicious. I bought them yesterday
-> The sweets______________________________________________
4. I gave you a book. It had many pictures
-> I gave you a book_________________________________________
5. That's the dictionary. Bill gave it to me for Christmas
-> That’s the dictionary______________________________________
6. I’m reading the book. I bought it in 1996
-> I’m reading the book______________________________________
7. The street leads to my school. It is very dirty in rainy seasons
-> The street_______________________________________________
8. The novel read two days ago. It had 450 pages.
-> The novel_______________________________________________
9. The computer is old. I have used it for 10 years.
-> The computer____________________________________________
10. The car parked in front of my house. It had black.
-> The car________________________________________________
III. Whom
1. Do you like the people? Sarah invited them to her party
-> Do you like the people____________________________________?
2. The man is John. We are talking to him.
-> The man________________________________________________
3. The girl is a famous singer. I wanted to meet her.
-> The girl________________________________________________
4. I know the girl. I spoke to this girl.
-> I know the girl___________________________________________
5. I remembered the man. I had seen him at the concert.
-> I remembered the man_____________________________________
6. The boy is my nephew. You met him at the party.
-> The boy________________________________________________
7. The woman is wearing a pink hat. I met her at the supermarket yesterday.
-> The man________________________________________________
8. The boy is Tom . We spoke to him last week.
-> The boy________________________________________________
9. The chilren broke the window. We punished them yesterday.
-> The children____________________________________________
10. The lady came to the meeting late yesterday morning. I would like talk to her.
-> The lady________________________________________________
hai bạn đăng từng lần một bốn câu đi cho nó ..... thôi 
1. The girl is Jane. She studied at university three years ago.
-> The girl____who studied at university three years ago is Jane____________________________________________
2. A girl was injured in the accident. She is now in hospital
-> A girl__who was injured in the accident is now in hospital________________________________________________
3. There's the boy. He broke the window.
-> There is the boy______who broke the window. ____________________________________
4. The man was sick. He looked very pale.
-> The man__who was sick looked very pale. ______________________________________________
5. The man is playing tennis. He is a famous player.
-> The man______who is playing tennis is a famous player.__________________________________________
6. The man is talking to my father. He spent 15 minutes measuring our kitchen.
-> The man___who talking to my father spent 15 minutes measuring our kitchen._____________________________________________
7. The children went to New York. They speak English.
-> The children____who went to New York speak English.____________________________________________
8. The woman is standing over there. She is my sister.
-> The woman________who is standing over there is my sister.________________________________________
9. The boys came late. They were punished.
-> The boys___________who came late were punished._____________________________________
10. There are the policemen. They caught the thief.
-> There are the policemen___who caught the thief._______________________________