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VI. Rewrite the following sentences without changing the meaning, using the word in brackets.
1. This conical hat is cheaper than the one I saw yesterday. (expensive)
2. Natural colors dye the silk scarf. (dyed)
3. Vietnamese soldiers built the Cu Chi Tunnels during the war. (built)
4. The city is more crowded than Hanoi. (as)
5. We visited Ho Chi Minh City last summer, said the tourist. (had)
6. The Mekong Delta is the largest river delta in Southeast Asia. (larger)