组卷网 > 初中英语综合库 > 语法 > 谓语动词的时态 > 过去进行时 > 表示过去某一时刻正在发生的动作
题型:单项选择 难度:0.65 引用次数:42 题号:21481420
—Jim, what did I say just now?
—Sorry, I don’t know. I ________ the math problem.
A.think aboutB.thought about
C.will think aboutD.was thinking about

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