1. 从方框中选择句子补全下面五组对话。

A. OK, Mr Jones. B. Yes, it is. It's time for music class. C. She's in Beijing. D. Wow! It's time to go to school. E. It's beautiful.

1. （1） —Where is Chen Jie?

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3. （2） —It's 7:30 a.m.

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5. （3） —Please come on, Tom and John.

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7. （4） —Look at this clock.

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9. （5） —Is it 9 o'clock?

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