根据句意及首字母提示，填写单词
Don’t f　　   　 the bottle (瓶子) with hot water. It’s very dangerous.
Can you i　　   　 what life on the moon is like?
This is a club s　　   　 organized for football fans.
Please s　　   　 the door when you leave the office.
The old man seems a little d　　   　. Please speak louder, or he can’t hear you clearly.