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。 pSfBixTIFk6Vv1d7Wg6krTBlk14nuUS3meE4c4P0B8q8FXHCRZhAgX/sy+sfWS1d