1. The man is learning English.       

⇒ It is the man who is learning English.

2. The woman gave him the book.

⇒ It was the book that the woman gave him.

3. She sent her friend the postcard.

⇒ It was a post card that she sent to her friend.

4. Hoa borrowed the book from Long.

⇒ It was the book that Hoa borrowed from Long.

5. The little boy grected his grandfather in a strange language.

⇒  It was his grandfather whom the little boy greeted in a strange language.

6. The pedestrian asked the policeman a lot of questions.

⇒ It was the policeman whom the pedestrian asked a lot of questions.

7. The dog barked at the stranger.

⇒ It was the stranger whom the dog barked at.

Bạn tham khảo nhé :

Đáp án :

1. It is the man who is learning English.

2. It was the book that the woman gave him.

3. It was a post card that she sent to her friend.

4. It was the book that Hoa borrowed from Long.

5. It was his grandfather whom the little boy greeted in a strange language.

6. It was the policeman whom the pedestrian asked a lot of questions.

7. It was the stranger whom the dog barked at.

Chúc bạn học tốt ! ^ω^