1. be careful...crawl slowly
2. go down and go up stairs slowly
3. http://go2pasa.ning.com/group/englishclub/forum/topics/2456660:Topi...
4. You have to behave yourself (อย่าซน). You might fall down.
5. Don't hold it in your mouth. You might choke (ติดคอ)/ It might be choked in your throat.
6. yes