I had been working on math for the whole afternoon and the numbers before my eyes．( )A．swimB．swumC．swamD．had swum 题目和参考答案——青夏教育精英家教网——

题目内容

6．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

分析我一整个下午都在做数学题，那些数字在我的眼前转．

解答答案C．在整个题目中，and 连接两个并列句，前面的句子使用的是过去完成时表示过去一直在学习数学，由语境可知，空白处表示的是发生在过去的一个动作，应该用一般过去时，故选C．

点评判断动词的时态，应该结合语境来进行具体判断．

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