I had been working on math for the whole afternoon and the numbers（）before my eyes.

分类: 作业答案 • 2021-12-28 15:35:37

问题描述：

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
选哪一项,为什么?

答

had been working 过去完成时态表明这个动作在过去的某个时段已经完成了 the numbers swam before my eyes一个过去式就ok了其实swam就已经有过去的意思了无论多久的过去.had swum感觉上说已经眼花什么的额不好