Benjamin was forced to admit what he had been doing.
本杰明被迫承认他所做的一切。
Until this summer, China had been doing that carefully.
截止今年夏天，中国一直在审慎地这么做。
Nobody knew what they had been doing all these years.
没有人知道他们这些年都在干什么。
At that point, he realized what he had been doing all along.
在那时，他才意识到他一直在做的事。
They demanded to know what I had been doing.
他们要求知道我一直在干什么。
Nobody knew what this rascal had been doing all these years.
没有人知道这个坏家伙这些年都在干什么。
As a matter of fact, this was very nearly what he had been doing.
实际上，这差不多就是他刚刚干的事。
Newton had been doing a considerable amount of experimental work in the study of light.
牛顿在研究光方面，已经作了大量的实验工作。
She'd (had) been doing some research work.
她一直在做研究工作。
She'd (had) been doing some research work.
她一直在做研究工作。
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