_________theirfinalmed

发布时间:2020-07-12 00:52:50

_________ their final medical check, the astronauts boarded their spacecraft.












A.Received











B.Being received










C.To receive










D.Having received

网友回答

D解析考查非谓语动词。接受体格检查再等上航天飞机之前,且主语与动作之间是主动关系,故需要用现在分词的完成式。
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