1. 读一读，选择合适的答语。

A. Yes, they are. B. Yes, it is. C. They are my father, my mother and me. D. He's a great doctor. E. 20.

1. （1） —What's your brother's job?

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3. （2） —Are they teachers?

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5. （3） —Is this your uncle?

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7. （4） —How many apples are there on the tree?

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9. （5） —Who are they?

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