1. 读句子，选答语。

A. She is my sister.

B. They are in the kitchen.

C. No, they aren't.

D. He's a student.

E. No, she isn't.

1. （1） —Who is that girl?

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3. （2） —What's John?

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5. （3） —Is she a teacher?

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7. （4） —Are they students?

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9. （5） —Where are they?

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