1. 读句子，选择相对应的答语。

A. Yes! Very big. B. It's Buckingham Place. C. Yes, it is. D. It's the Queen's house.

1. （1） —What's this?

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3. （2） —Is this your house?

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5. （3） —Whose house is it?

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7. （4） —London is a big city.

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