A.To chat with Jack socially.B.To get help in the course.C.To hand in their assignment

外语类 公共英语 已帮助 人

A.To chat with Jack socially.

B.To get help in the course.

C.To hand in their assignments.

D.To practice giving interviews.

请帮忙给出正确答案和分析,谢谢!

热搜:a是b的充分条件,b是a的必要条件吗