题目内容
【题目】I had been working on math for the whole afternoon and the numbers __________ before my eyes.
A. swim B. swum
C. swam D. had swum
【答案】C
【解析】句意:整个下午我都在做数学题,眼前全是数字。and前的句子为过去完成进行时,表示动作持续到过去某一时刻,and后的句子正是陈述“过去那个时刻的事实”,故用一般过去时态。
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