Only when he returned home ______ what had happened.A．did he realizeB．he realize_刷题宝

题干

Only when he returned home ______ what had happened.

A．did he realize

B．he realized

C．he did realize

D．has he realized

上一题下一题 0.64难度单项选择更新时间:2015-11-16 04:56:22

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