to his research work, the professor cared little about any other things．
A. Devoting
B. Devoted
C. Having devoted
D. To devote
网友回答
A. Devoting
(答案→)B. Devoted
C. Having devoted
D. To devote
解析：这题考查非谓语动词，be devoted to sth“致力于”，过去分词devoted在这句话里做原因状语，句意是：因为致力于他的研究工作，教授几乎不关心其他事。