问下一个语法点。。。求大牛们~

With an awareness that there are connotations associated with the numbers 1 and 2 and the letters

A and B, companies conducting consumer taste tests of foods or beverages typically choose

numbers such as 697 or 483 to label the products.

(A) With an awareness that there are connotations associated with the numbers 1 and 2 and the

letters A and B

(B) Because the numbers 1 and 2 and the letters A and B have connotations they are aware of

(C) Because of an awareness of the numbers 1 and 2 and the letters A and B having connotations

(D) Aware of the connotations of the numbers 1 and 2 and the letters A and B

(E) Since the numbers 1 and 2 and the letters A and B have connotations associated with them and

they are aware of it 

答案是d 我一直不会关于句首的什么和主语一直之类的问题，比如说这道题，如果把companies放在举手的话整个句子应该是怎么样的呢~？按照d改的话是companies are aware of。。。。这么改吗？如果那样的话为什么答案不是being aware of啊~？或者有些题开头是inspired by什么，he 怎么怎么地，如果是这样的话改成正常的话是he was inspired by 吗？如果是inspiring的话就是he inspires吗？

试着解释一下还原后确实是companies are aware of ,但是being就没必要加了，这个用法应该是形容词做状语修饰主句，being+adj的用法中 being是多余的

后面你说的也对，过去分词表被动，现在分词表主动