题目内容：

根据句意和汉语提示在空白处填入一个适当的单词。

1.Mr. Li is very ___________(严格的) with us in our study but we all like him very much.

2.The TV program “Running Man” shares with us team __________(精神).

3.Every ___________(月)， I visit the home for the elderly as a volunteer.

4.If we act to protect the environment， we will make a ____________(差异).

5.I can’t _____________(买得起) the expensive items.