按要求完成句子。
1.Chinese/ years/ are/ named/ twelve/ after/ animals (.) (练词成句)
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2.sister/ my/ collect/ to/ likes/ dolls/ when/ was/ she/ years/ six/ old (.) (练词成句)
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3. They were swimming players. (改为否定句)
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4. We like collecting stamps because it is interesting. (对划线部分提问)
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5. I visited Beijing last Sunday. (改为一般疑问句)
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