in thought, he sat at the edge of the bed, with his eyes on the letter in his hand.
A. Lost; fixing
B. Losing; fixed
C. Lost; fixed
D. Losing; fixing
网友回答
A. Lost; fixing
B. Losing; fixed
(答案→)C. Lost; fixed
D. Losing; fixing
解析：考查分词用法。Be lost in thought陷入沉思；第二空的eyes与fix构成被动关系，使用过去分词。