53.If she doesn't tell him the truth now, he'll simply keep on asking her until she _______. A) does B) has done C) will do D) would do

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until, when .since . if , after . unless 等引导的时间条件状语从句中用一般现在时表将来。

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A 这不是虚拟语气,until后用一般现在时

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A