根据句意及首字母（汉语）提示，补全单词。
1. We should use these bottles for r__ __.
2. All these houses were b___ _ with some used things.
3. P____ the door first when you come into my office. Don't push it.
4. Our teaching building has a special r__ __. It looks very, beautiful.
5. My brother has a____ （模型）of Shen Zhou V space ship.