请教牛牛～

zhjie

Ideally, the professional career diplomat should help in the ongoing maintenance of an effective American foreign policy despite changes in administration.
(A) in the ongoing maintenance of
(B) in the maintaining of
(C) maintain
(D) to maintain and continue
(E) the maintenance of
选B,为什么不选D啊？如果改成to maitain还对不？

apchy

D中的maintain and continue有重复的概念。B中的maintaining包括了ongoing的意思。
建议下次把下划线也标出来。