单选题 He devoted most of his time ______ making scientific discoveries.
  • A. in
  • B. with
  • C. to
  • D. for


【正确答案】 C
【答案解析】devote time to doing something为英语固定短语，表示“献身于，致力于”。其中to为介词，后接动名词作其宾语。