1. 补全对话。

A．It's mine． B．They are tomatoes． C．It's warm and cloudy． D．It's 45 yuan． E．It's on the second floor．

1. （1） —Where's the teachers' office?

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3. （2） —What's the weather like in Sydney?

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5. （3） —How much is this skirt?

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7. （4） —What are these?

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9. （5） —Whose coat is this?

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