英语高手请进,为什么不选cut down?

问题描述:

英语高手请进,为什么不选cut down?
I’m afraid taking a part?time job might ____ my time for study.
A) cut off B) cut into?
C) cut down D) cut away?

sorry.刚才的解释有误!
cut down作“削减”讲的时候须和介词on连用
e.g.cutting down on one's intake of rich foods.
减少对多油腻食物的食量
(选自金山词霸词条)
这个是正确的解释.