1. has taken-> took

wins-> won 

2. longer-> longest 

3. is cleanest->is the cleanest 

4. doesn't rain-> hasn'r rained 

5. a such-> such a 

6. spent-> took 

7. Have-> Has

8. but-> and 

9. climb-> climbing 

10. Which-> What

1. My sister took part in swimming competition at school last week and won the third prize.

2. The longest book I have read is the Prison Diary of Ho Chi Minh.

3. Singapore is the cleanest city in the world.

4. It hasn't rained since last week.

5. I have never seen such a big flower. 

6. It spent a long time traveling to the skiing resort but in the end we got there.

7. Has she finished her homework yet ?

8. People in Viet Nam are very friendly and good-hearted.

9. We must be well-prepared before climbing Mount Fansipan.

10. Where is Brazil in ? ( câu này mình k chắc cho lắm, nếu sai cậu thông cảm nhé :< )

* Những từ mình in đậm là từ đã sửa rồi nhé :3

Chúc bạn học tốt :3

# Yurrie