根据句意及单词的首写字母完成句子。

1. After taking a shower, he went out of the b           .  

2. When I came into the room, mother was cooking in the k           .  

3. Don’t f         with others, and we should learn how to get on well with each other.

4. The plane l           at Dalian Airport safety.

5. W           he was watching TV, his father came home.

按用途分接地有以下几种（）。

A.工作接地

B.保护接地

C.防雷接地

D.重复接地