Ⅰ. 根据句意及首字母或汉语提示完成单词（5分）
1. Jenny was s_____ when she saw the rubbish in the school yard.
2. Some of the paper is only u_____ on one side.
3. We can r_____ the waste water and some packaging.
4. They take a broken toy car home and _____(把……弄干净) it.
5. Our teacher put the _____(分类的) books on the desk.
Ⅱ. 用所给词的适当形式填空（5分）
1. Your answer is _____(exact) right.
2. One of the _____(wheel) is too small.
