________ many times, he finally understood it.A．Told B．TellingC．Having toldD．Bee_刷题宝

题干

________ many times, he finally understood it.

A．Told

B．Telling

C．Having told

D．Been told

上一题下一题 0.4难度单项选择更新时间:2012-06-05 06:04:57

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