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Onceagroupof50peoplewasattendingaseminar(讨论会).Halfwayth...
问题详情:Onceagroupof50peoplewasattendingaseminar(讨论会).Halfwaythrough 61 (he)talk,thespeakerstoppedanddecided 62 (create)agroupactivity.Hewentaroundthehallandgaveeachpersonaballoon.Eachonewasask...