单选题 The trouble is you're too good-natured and people take advantage of it. ______ You will have to learn to refuse people who ask too much.

A、 Walls have ears.
B、 Add fuel to the fire.
C、 All lay load on the willing horse.
D、 Beauty is in the eye of the beholder.

【正确答案】 C

【答案解析】题干中指出“问题是你脾气太好了，别人就会利用你这一点…你应该学会拒绝那些向你提出太多要求的人”，因此C项“人善被人欺，马善被人骑”符合语境。Walls have ears隔墙有耳。Add fuel to the fire火上加油。Beauty is in the eye of the beholder情人眼中出西施。