1. 根据问句选答语。

A. He was born in America. B. Because she is tired. C. They are playing baseball. D. I did my homework. E. Because he is hungry.

1. （1） —What are they doing?

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3. （2） —What did you do?

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5. （3） —Why is she sleeping?

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7. （4） —Why is he eating a hot dog?

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9. （5） —Where was he born?

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