按要求完成下列各题。
1. Santa brought me toys. (变成否定句)
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2. I would like some tomatoes for lunch. (就画线部分提问)
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3. I want to buy Christmas lights. (就画线部分提问)
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4. Danny walked to school. (变成一般疑问句)
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5. Can you ski backwards? (作否定回答)
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