【A】1.Thelatestdataputforwardbythestatessuggestedthatthebusiness_____improving.
A.wasB.beC.beingD.should
【C】2.----HowisyourtouraroundtheNorthLake?Isitbeautiful?
----It____be,butitisnowheavilypolluted.
A.willB.wouldC.shouldD.must
【A】3.We______haveprovedgreatadventures,butwehavedonethegreatestmarchevermadeinthepasttenyears.
A.needn'tB.maynotC.shouldn'tD.mustn't
【C】4.He_____haveattendedtheconcert,forheknewnothingaboutit.
A.shouldn'tB.mustn'tC.couldn'tD.needn't