Youshouldhavesaidsor的精選

問題詳情：—Youshouldhavesaidsorrytoyourteacherafterclass.—Imeant________，buthewastoobusyformetocutinduringtheclassbreak.A．todo B．toC．doing D．doingit【回答】B[考查省略句式。to用來代替整個不定式tosaysorryt...