Turning around he found her eyes upon his face with an eager expression.A. fixingB. to f

问题补充：

Turning around, he found her eyes upon his face with an eager expression.

A. fixing

B. to fix

C. fixed

D. were fixing

答案：

A. fixing

B. to fix

(答案→)C. fixed

D. were fixing

解析：考查过去分词作宾补，find sth done,发现某物被，短语：fix one’s eyes on 眼睛盯在什么上，题中her eyes在前面，所以应用过去分词fixed作宾补，选C。