Mary has recently got engaged ________ a foreign teacher, who has been engaged ________ education research for years.

Mary has recently got engaged ________ a foreign teacher, who has been engaged ________ education research for years.

A. with; in                 B. to; in             C. in; to             D. in; for

Mary has recently got engaged ________ a foreign teacher, who has been engaged ________ education research for years.