问题补充:
, 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
答案:
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。