按要求变换句型。
1. Su Yang is cleaning the library now. (将now换成often)
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2. We did some shopping yesterday. (变成一般疑问句)
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3. The new comb is hers. (对画线部分提问)
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4. There was some milk in the bottle. (变成否定句)
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5. they, on, last, did, the, the, milk, farm, Saturday, cows (连词成句)
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【考点】一般现在时，动词单数第三人称,疑问代词,否定句,一般疑问句,连词成句

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