按要求改写句子。
1. Open the books. (改为否定句,句意不变)
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2. That's our school. (改为一般疑问句)
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3. We can read in the library. (对划线部分提问)
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4. This is a big hall. (改为否定句)
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5. I’m Kitty. (对划线部分提问)
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