their final medical check, the astronauts boarded their spacecraft．A．Recei_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 0.64难度单项选择更新时间:2011-05-09 04:48:32

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