天上掉馅饼？我不相信把孩子扔家里他能自己刷题，估计大部分时间是玩游戏，看油管。美国不像国内那么竞争激烈

来源: tax2 于 2019-05-29 14:43:21 [旧帖] [给我悄悄话] 本文已被阅读：次

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