The scientist knew nothing about the matter, because he was always himself in his study.
A. burying
B. devoting
C. focusing
D. concentrating
网友回答
(答案→)A. burying
B. devoting
C. focusing
D. concentrating
解析：考查动词和动词搭配：A. burying 埋葬，bury oneself in…B. devoting奉献，致力于，devote oneslf to …，C. focusing专注，focus…on，D. concentrating专注，concentrate on，句意：科学家不了解这个事情，因为他总是埋头在书房里面。选A。