17. Mount Everest is the highest mountain than all. ---> Bỏ từ than
18. This house has the beautifullest garden on our street. ----> most beautifull
19. My younger sister has full lips and small white tooths. ---> teeths
20. My younger sister likes to play swimming and jogging. ---> go
21. What's the weather like in HCM city for the summer? ----> in ( câu này ko chắc )
22. In the weekend, he often goes swimming. ---> at
23. They always taking food and water and a tent. ---> take