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英语
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进、?1 Jane is four years old.Her brother is three times as old as Jane..
How old will Mark be when he is twice as old as Jane?
人气：130 ℃ 时间：2019-10-10 04:47:47
解答
4 / 12
4+4 / 12+4
Mark will be sixteen when he is twice as old as Jane
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