The singing group was so well received that the size of audience we had expected was we

问题补充：

The singing group was so well received that the size of audience, we had expected, was well over one hundred.

A. whom

B. who

C. as

D. what

答案：

A. whom

B. who

(答案→)C. as

D. what

解析：考查定语从句。as“正如”引导非限定性定语从句，as we had expected正如我们所期望的，选C。