【题目】连词成句。
1. things, wood, we, make, use, to (.)
____________________________________________________________
2. much, places, isn’t, water, there, many, in (.)
____________________________________________________________
3. should, we, protect, Earth, the, and, it, keep, clean (.)
____________________________________________________________
4. you, can, plastic, to, bottles, a, toy, make, reuse (?)
____________________________________________________________
5. help, can, keep, because, trees, clean, air, the (.)
____________________________________________________________
【题目】根据所给汉语填入适当的词。