- 问题详情:Jackwassoexcitedaboutgettinganewbackpackbecausehisoldonehadabrokenzipper(拉链)andaholeinthebottom.Jack’selderbrothertookhimtobuyanewbackpack.Thereweresomanycoolones.Howwouldheeverdecide?Hesawblueones—hisfavoritecolor.Hesawoneswithhisfavorit...
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