The construction of the laboratory_________ by the end of July.A．must be complet_刷题宝

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The construction of the laboratory_________ by the end of July.

A．must be completing

B．must complete

C．must have completed

D．must have been completed

上一题下一题 0.4难度单项选择更新时间:2018-04-09 04:01:31

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