The number of the audience we had expected was a thousand.A. whomB. whoC. asD. that

问题补充：

The number of the audience, we had expected, was a thousand.

A. whom

B. who

C. as

D. that

答案：

A. whom

B. who

(答案→)C. as

D. that

解析：正如我们所期望的，观众的人数达到了一千人。定语从句中可用as和which来引导整个句子。