比如這個

來源: 於 2019-01-22 11:57:17 [舊帖] [給我悄悄話] 本文已被閱讀：次

but behind their back she thinks they are crazy coming to this place, yes, she believes most of the students are just wasting time, she believes they wont improve

你怎麽證明這個是事實呢？