根据句意及首字母（汉语）提示，补全单词。

1. The building was locked, and all of us within felt s_____.

2. There are swings (秋千) and s_____ (滑梯) in the children's playground.

3. Children need o_____ activities in school.

4. The performances were really _____ (迷人的).

5. The service in that _____ (餐馆) was very poor.