按要求改写句子。
1. The Spring Festival is on February l3 this year. (就画线部分提问)
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2. I need some paper and a pen.(就画线部分提问)
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3. I like the black trousers.(变成一般疑问句)
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4. My favourite holiday is New Year's Day. (就画线部分提问)
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5. We need these books for the trip.(变为单数句)
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