.Mr. Richard hasn’t got any time to play golf these days,because he is in the research of bird language.
A. devoted
B. concentrated
C. buried
D. spared
网友回答
A. devoted
B. concentrated
(答案→)C. buried
D. spared
解析:be buried in “专心做……”;devote...to...“致力于做……”;concentrate on “专心做……”。