句型转换。
1. Did Amy wash the clothes? (作肯定回答)
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2. I read books yesterday. (就画线部分提问)
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3. I like playing football. (就画线部分提问)
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4. Mike did his homework yesterday. (变为一般疑问句)
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5. Is the book Ann's? (作否定回答)
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6. I went hiking last weekend. (变为否定句)
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