Professor David Morton of the department is involved ______animal research and is concerned ______reducing animal suffering as much as possible.
A. to…with
B. in…in
C. with…in
D. in…with
正确答案：D
[解析]系教授DavidMorton专攻动物研究而且关心尽可能地减少动物痛苦beinvolvedin：参与；beconcernedwith：关心
