His sister has recently got engaged a foreign teacher, who has engaged education research for years.
A. with; in
B. to; in
C. with; on
D. in; for
网友回答
A. with; in
(答案→)B. to; in
C. with; on
D. in; for
解析:本题考查介词的用法。be engaged to sb“与某人订婚”;be engaged in sth“忙于做某事”。