1. John will never forget the day when he met Mary for the first time.

2. Da Nang is a city where I was born and grew up.

3. That is the reason why he left his job.

4. London is a big city where we spent our vacation.

5. The room is very nice where I'm living.

6. We have not decided the day when we will go to London.

7. Spring is the most beautiful season when flowers are in full bloom.

8. Do you know the name of the hotel where John is staying in?

9. The reason why she didn't talk with me was very simple.

10. The days when I lived far from home were the saddest one.

11. The book where we can look up the phone numbers is the telephone directory.

12. December is a month when it is the coldest in the USA.

Giải thích:

- When dùng để chỉ thời gian.

- Where dùng để chỉ nơi chốn.

- Why dùng để chỉ lý do, nguyên nhân.

1. John will never forget the day when he met Mary.

2. Da Nang is a city where i was born and live.

3. That's the reason why he left his job.

4. London is a big city where we spent our vacation.

5. The room where i'm living in is very nice.

6. We have not decided the day when we wil go to London.

7. Spring is the most beautiful season where flowers are in full bloom.

8. Do you know the name of the hotel where John is staying in.

9. The reason why she didn't talk with me was very simple.

10. The days when i lived far from home were the saddest ones.

11. The book where we can look up phone numbers is the telephone directory.

12. December where it is the coldest in the USA is a month.

Chúc bạn học tốt!