ProfessorJohnsonissa的精选

问题详情：ProfessorJohnsonissaid________somesignificantadvanceinhisresearchinthepastyear.A．havingmade  B．makingC．tohavemade D．tomake【回答】C[句型“主语＋besaid”后接动词不定式，根据句中的时间状语inthepastye...