根据首字母完成单词

1. Ted w____why the police called him, so he went to the police station yesterday.

2. Would you mind opening the window to let f         air in?

3. If you want me to help you, you must tell the t_____.

4. That big zoo is s        for animals to live in.

5. It's important to r         paper to save the trees.

安装在配电盘和控制盘装置上的电气测量仪表和其它低压电器等的外壳（）。

A.必须接地

B.不需要接地

C.应视情况接地

D.以上都不对