TheCoca-ColaCompany___________wisertoleavetheoldCokealoneandintroduceNewCokeasabrandextension.【黑龙江省哈市五县2011年高考模拟试卷英语卷(22)】【情态动词及虚拟语气】
A.mighthavebeen B.can’thavebeen
C.musthavebeen D.canhavebeen