问题补充：
He is so to his English teaching that I admire him for his .
A. devote; devote
B. devoting; devotion
C. devoted; devotion
D. devoted; devote
答案：
A. devote; devote
B. devoting; devotion
(答案→)C. devoted; devotion
D. devoted; devote
解析：词义辨析。devote动词，致力于；devoting现在分词；devotion名词，现身，忠诚；Devoted献身的，忠诚的。句意：他是如此献身于英语教学，因此我很欣赏他的现身精神。故选C.
