Rewrite the sentences according to request.(按要求改写句子)
1. Do you know these countries? (否定回答)
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2. I’d like to go to Yunnan. (一般疑问句)
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3. Lily’s aunt can speak Russian. (对划线部分提问)
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4. Santa’s name was written on the corner. (对划线部分提问)
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5. There are 13 stripes on the American flag. (对划线部分提问)
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