阅读对话，回答问题。(8分)
Sarah: Hello. Miss White.
Miss White: Hi, Sarah. How is everybody doing?
Sarah: Just fine. Amy is reading a comic book. Zhang Peng is cleaning the windows. Mike is sweeping the floor. Chen Jie is drawing a picture....
Miss White: Cool. Everyone is busy.
（1）Who is drawing a picture?
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（2）What is Amy doing?
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（3）Is Zhang Peng sweeping the floor?
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（4）What is Mike doing?
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