Only then _________ that I can erase the wrong words I have written, but I can’

题干

Only then _________ that I can erase the wrong words I have written, but I can’t erase the things I have done.

A．did I realize	B．have I realized
C．I realized	D．I did realize

上一题下一题 0.85难度单项选择更新时间:2014-11-04 08:21:00

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