I found the lecture hard to follow because it ________ when I arrived.A．startedB_刷题宝

题干

I found the lecture hard to follow because it ________ when I arrived.

A．started	B．was starting
C．would start	D．had started

上一题下一题 0.65难度单项选择更新时间:2014-06-24 06:41:47

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