, tears came to her eyes.
A. Reading the letter
B. While reading the letter
C. As she was reading the letter
D. To read the letter
网友回答
A. Reading the letter
B. While reading the letter
(答案→)C. As she was reading the letter
D. To read the letter
解析：句意：在她读这封信时，眼泪从她的眼中流出。tears came to her eyes是一个独立主格结构，所以前面需要一个句子，选C。