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最佳答案：How long is how long?
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最佳答案：How long do you need?
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最佳答案：This book is by how long you have
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最佳答案：How long have you been like this？
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最佳答案：应该填写：How often do you go to the park?
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最佳答案：How long have you been swimming?Three hours.
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最佳答案：How long can the friendship between you and your friend lasts?
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最佳答案：How long have you known the Simiths
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最佳答案：不是啊是How often does his grangpa walk to the park(every day)?都每天了还能说多久一次吗 ?楼上是＂他的爷
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最佳答案：毕竟英语和汉语是两种截然不同的语言,不应该根据单词一一对应的翻译句子 个人理解,英语中习惯去用很长的状语和定语,而且在句式上会有变换,像同一个句子,变成疑问句,