We want to encourage the students the teaching.
A. to participate in
B. participate in
C. participating
D. participate to
网友回答
(答案→)A. to participate in
B. participate in
C. participating
D. participate to
解析：句意：我们想要鼓励学生参加教学活动。Encourage sb to do鼓励某人做某事；participate in参加某活动。