单选题Everybody showed great re

问题补充：

单选题Everybodyshowedgreatrespecttotheolddoctor,whodevotedeverythinghehadto__________thepoorconditionsofthelocalhospital.A.improvingB.improveC.to improveD.being improved

答案：

A解析考查固定短语。Devote sth to sth/doing sth,花费时间做某事；to是介词。后面接动名词。