问题补充：
himself to his research on the IT technology, he soon made a breakthrough.
A. Devoted
B. Devoting
C. Devote
D. To devote
答案：
A. Devoted
(答案→)B. Devoting
C. Devote
D. To devote
解析：考查现在分词做状语，句意：因为致力于IT技术的研究，他很快就有了突破。Devote oneself to doing致力于做…,he和devote是主动关系，用现在分词做状语。选B。
