很高兴为你解答.
保证正确率~!
正确答案是：A
【解析】：
B 是过去的过去,这里不强调先后顺序,只是单纯的描述一种状态.
swim 在这里也不是“游泳”的意思,而是“眩晕”.
【翻译】：
我已经学习数学题一上午了,看到数字我眼都花了.
祝开心~!
I had been working on math for the whole afternoon and the numbers（）before my eyes.
I had been working on math for the whole afternoon and the numbers（）before my eyes.
A.swam B.had swum
为什么选A不选B,理由呢?
A.swam B.had swum
为什么选A不选B,理由呢?
英语人气：878 ℃时间：2020-03-31 09:30:30
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