来自刘桂林的问题
【29.___itbeLiPingwhobroketheglass?No.It__beWangHaiwhodidit.分析为什么选D而不选B.30.Whentheoldmanwasalive,he__sitforhoursatthedoor.为什么选A而不选C.32.IhavedecidedtotakethejobandI___changemymind.A.mu】
29.___itbeLiPingwhobroketheglass?No.It__beWangHaiwho
didit.分析为什么选D而不选B.30.Whentheoldmanwasalive,he__sitforhoursatthedoor.为什么选A而不选C.32.IhavedecidedtotakethejobandI___changemymind.A.mustnotB.cannotC.wonnotD.maynot分析为什么选C而不选B.
29，a,couldmayb,cancanc,maymustd,canmust
