Make sentences from the given words or phrases

Make sentences from the given words or phrases.
1. The London Underground / be/ old/ metro system/ the world.
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2. New York/ be/ one/ busy/ cities/ the world.
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3. I/think / Ha Long Bay/ be/ famous/ than/ Phu Quoc Island.
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4. Tomorrow/ Loan/ buying/ camera/ her brother’s birthday.
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5. I/ will/ help/ parents/ cook/ chung cakes/ Tet.
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