根据句意及首字母提示,填写单词.

1. Don't f             the bottle (瓶子) with hot water. It's very dangerous.

2. Can you i           what life on the moon is like?

3. This is a club s          organized for football fans.

4. Please s        the door when you leave the office.

5. The old man seems a little d          . Please speak louder, or he can't hear you clearly.

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