在横线上填入一个适当的词或用括号内所给单词的适当形式填空。
【小题1】I need some water __________ (drink)。
【小题2】She often tells funny stories to keep us __________ (happily).
【小题3】Joe looked __________at the sky and saw a cloud moving like a snake.
【小题4】You can use the key __________ (open) the door.
【小题5】She is very strong. She can even lift __________ a man like Tom.

请根据课本More practice部分的文章内容和所给的五个要点提示,对该文章进行复述。
1. What doesn’t air have?
2. When do we feel air on our face?
3. How do a kite and a plane stay in the air?
4. How does a balloon rise in the air?
5. Why do we need air?

Air doesn’t have...________________________________________________________

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