Supposing your partner left his/her bag in the library and you picked it up.Make a dialogue about that between your partner and you.

假设你的同伴把书包落在图书馆，你捡到了书包。和你的同伴关于这个话题做一个对话。 eIccebGng9vPnO1SwRR720VnLrmMM3FgMacFjp8x9+mliPRhfG2HWa8GcB+DY1qb