Question

He said it was impossible for __a mistake in a computer's calculation ,so you can rely on that.

A,there being B, there would be C, there to be D,there was
选哪个 为什么？

Answer 1

C 1、有for引导，则用there to be。
It’s a great pity for there to be much trouble in the class.
太遗憾了，这个班上有多方面的麻烦。
2、没有for引导，则用there being。
There being a public bus service is a great convenience to people.
作独立主格结构，用there being.
There being nothing else to do, they went home.没有别的事做，他们回家了。
2、但若置于介词for之后，则用there to be，整个介词短语作程度状语。
It was too late for there to be any buses.太晚了，不会有公共汽车了。

Answer 2

A,因为前面有介词for