1.I'm cleaning my room. (改为一般疑问句)
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2.l can see twenty cars. (对划线部分提问)
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3.l live in Shanghai. (对划线的部分提问)
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4.The city is very beautiful.(改为 what 引导的感叹句)
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5.My name is Liujun. (对划线的部分提问)
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6.He is playing football. (改为否定句)
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7.I'm cleaning my room. (改为一般疑问句)
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8.l can see twenty cars. (对划线部分提问)
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