为什么选项中出现being必错?该规则可靠吗?

基本可靠。。。关键是being后面接的是什么，而不管什么，being大都是可以省略或者可以替换的。。。

所以出现being基本上是不对的。。。

大多时候都错，但是也要小心，比如说下面的题目，我的方法是不会立刻去除，但会放在second priority，没有好的选项时回头考虑

Sec4-4

Framed by traitorous colleagues, Alfred Dreyfus was imprisoned for twelve years before there was
            exoneration and his freedom.

(A) there was exoneration and his freedom

(B) he was to be exonerated with freedom

(C) being exonerated and freed

(D) exoneration and his freedom

(E) being freed, having been exonerated

being在两种情况下是对的

1.介词+being done, 表被动

2.the chance of being