Unit 8It must belong to Carla.单元语法专题(Grammar Focus)cantmay/might/couldmay/might/couldmustcouldCouldcanmustntBCBACBcant be waiting forwatch must have stoppedmust belong to himmust be something worryingcant be listening tomay not belong tocant beCouldcomeWhose couldmustcantmight/couldcantmustmay/mightmay/might/couldmust