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1. I'm writing a letter.（變?yōu)橐话阋蓡柧洌?BR>        you        a letter?
2. They are playing soccer at school.（對劃線部分提問）
                 they playing soccer?
3. Mr Green is playing the guitar.(對劃線部分提問）
         Mr. Green         ?
4. They're talking to an old man.（對劃線部分提問）
                 they talking to?
5. He often plays football in the afternoon.（用now替換often改寫句子）
He                 football now.