oB.needn'tC.shouldn'tD.mustn't95.Sorry,Iamlateagain.ehere.A.needB.shouldC.willD.must96.Ididn'thearthephone.I____asleep.A.mustbeB.shouldbeC.musthavebeenD.shouldhavebeen97.LiMing____tovisithismathsteacherlastnight.(butIamnotsure)A.musthavegoneB.mighthavegoneC.mightgoD.maygo98.Ican'tfindmyumbrella.I____itattheoffice.A.couldhaveleftB.canleaveC.shouldhaveleftD.shallhave99.Idon'tknowwhat'sthematter.Thetrain____hereanhourago.A.shallarriveB.shouldarriveC.shouldhavearrivedD.oughthavearrived100.You____thebooktome.Youcankeepitifyoulike.A.can'treturnB.needn'thavereturnedC.maynotreturnD.can'thavereturned巩固练习答案:1-5ADBAA6-10ADABD11~15BACBC16~20ADAAC21~25ACBBB26~31~35DDBAB36-40CBCDB41-45DACBD46--50DCBBB51--55CDAAB56--60BBCBA61--65DCAAA66--70DDDCB71--75BDCDD76--80CABCD81--86--90BADBA91--95CBBBB96--100CBACB