- 問題詳情:Jackwassoexcitedaboutgettinganewbackpackbecausehisoldonehadabrokenzipper(拉鍊)andaholeinthebottom.Jack’selderbrothertookhimtobuyanewbackpack.Thereweresomanycoolones.Howwouldheeverdecide?Hesawblueones—hisfavoritecolor.Hesawoneswithhisfavorit...
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