John Smith a diligent student never refuses to______more responsibilities that are assig

学历类 专四 已帮助 人

John Smith, a diligent student, never refuses to______more responsibilities that are assigned to him.

A.take in

B.take up

C.take on

D.take off

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