inthetickethallforalmostanhour,IsuddenlyrealizedIha

发布时间：2020-08-05 14:02:43

     in the ticket hall for almost an hour, I suddenly realized I had left my ID card home.A.To waitB.To have waitedC.WaitingD.Having waited

网友回答

D解析考查非谓语动词。因为wait这个动作发生在realize这个动作之前，又因为主句的主语I与wait之间是主动关系，故要用现在分词的完成式，
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