by the teacher, Bob has made great progress this term.
A. Educating
B. Having educated
C. Educated
D. To be educated
网友回答
A. Educating
B. Having educated
(答案→)C. Educated
D. To be educated
解析：本题考查非谓语动词作状语。句意：在老师的教导下，他这学期取得了很大的进步。Bob是被教导的，且动作已经发生，故用过去分词。