Ex 2: 

Thanh and his parents go back to their hometown to visit his uncle last weekend. He live in a small village in Nam Dinh Province. They went to Ha Noi Railway Station with taxi. Then they took a plane to their hometown. His uncle took them to Vi Xuyen Lake, Rong Market and Thinh Long Beach. They has  a wonderful time in their hometower.

Correct: 

Thanh and his parents went back to their hometown to visit his uncle last weekend. He lives in a small village in Nam Dinh province. They went to Ha Noi Railway Station by taxi. Then they took a plane to their hometown. His uncle took them to Vi Xuyen Lake, Rong Market and Thinh Long Beach. They had a wonderful time in their hometown.

Những lỗi sai mình gạch chân và sửa lại thành các từ in nghiêng bên dưới nha. 

Ex 3: 

11. His hometown is in Nam Dinh Province. 

12. They get to Hanoi Railway Station by taxi. 

13. No, they didn't.

14. They went to Vi Xuyen lake, Rong market and Thinh Long beach. 

15. The trip was wonderful. 

 go -> went

5. live -> lives

6. with -> by

8. has -> had

9. hometower -> home town

11. It is in Nam Dinh.

12. By taxi

13. No, they don't

14. Vi Xuyen Lake, Rong Market and Thinh Long Beach

15. It was wonderful.