Atfirstthestudentsdi的精選

問題詳情：Atfirst,thestudentsdiscussedthequestionsallinEnglish,butafterawhile,they______speakinginChinese.A．gaveup   B．pickedup   C．turnedup   D．endedup【回答】D【解析】句意：起初，學生全用英語討論問題...