_________ their final medical check, the astronauts boarded their spacecraft. A_刷题宝

题干

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

A．Received

B．Being received

C．To receive

D．Having received

上一题下一题 0.4难度单项选择更新时间:2012-10-09 01:11:47

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