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最佳答案：这个是对的How long haven't you + 动词过去分词..1, How long haven't you been back home?2,He
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最佳答案：It's not sure that how long it will take the human beings to living in the botto
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最佳答案：I have no direction!There is also no target!How long don't I know oneself an abi
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最佳答案：一楼是机器翻译的.以下全部手工翻译,无错误,如同意,请采纳.I don't remember how long I've walked.I don't know
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最佳答案：What will you do during this holiday?How long did you go to JiangSu by train?We
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最佳答案：人类要多久才能生活在海底尚没有把握There's still no answer how long the humanbeings could live und