VI. Rewrite the following sentences without changing the meaning, using the word in brackets. (Viết lại các câu sau mà không làm thay đổi nghĩa, dùng từ trong ngoặc.)
1. This conical hat is cheaper than the one I saw yesterday. (expensive)
The conical hat________________________________________________
2. Natural colors dye the silk scarf. (dyed)
The silk scarf__________________________________________________
3. Vietnamese soldiers built the Cu Chi Tunnels during the war. (built)
The Cu Chi Tunnels_____________________________________________
4. Ho Chi Minh City is more crowded than Hanoi. (as) 
Hanoi___________________________________________________________
5. "We visited Hoi An Ancient Town last summer," said the tourist. (had)
The tourist said that__________________________________________________
6. The Mekong Delta is the largest river delta in Southeast Asia. (larger)
No other river delta__________________________________________________