连词成句。
1. things, wood, we, make, use, to (.)
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2. much, places, isn’t, water, there, many, in (.)
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3. should, we, protect, Earth, the, and, it, keep, clean (.)
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4. you, can, plastic, to, bottles, a, toy, make, reuse (?)
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5. help, can, keep, because, trees, clean, air, the (.)
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