根据要求进行句型转换
1. They are in Class Four . (变为一般疑问句)
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2. My father is making a car. (变为否定句)
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3. Sandy and Sue fly their kites . (变为现在进行时)
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4. Are there any tomatoes in the refrigerator? (做否定回答)
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5. We are playing hopscotch. (对划线部分提问)
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