题目内容：

用词组的适当形式填空。（每小题1分）

1.As students, we should ________(做贡献)to protecting the envirment.

2.Our government ________(采取措施)to control the population in recent years.

3.________(随着……发展)of industry,great changes have taken place in China.

4.I feel happy because I could  ________so many poor people ________(帮助……出来).

5.The government provides enough food, kinds of cloth and ______ (医疗)for homelessness.