资源看点：对所学基础知识进行分课练习，同步实用。

Lesson 49

I. 根据括号中所给的汉语用适当的词语填空。

1. This sweater is too dear. It costs me 500 ____________（美元）.

2. ___________（运动）is good for health. Do you think so?

3. My father has two new ___________（篮球）and an old football.

4. Li Ming, where can I put these ___________（跑鞋）, please?

5. ___________ （打）ping-ping is very easy. Do you want a go?

II. 根据句子意思用适当的介词填空。

1. She is looking __________ her pencil, but she can’t find it.