Last year the income of the organization was_____more than one-forth.A cut down B dropped off 都是减少 咋整呀

问题描述:

Last year the income of the organization was_____more than one-forth.
A cut down B dropped off 都是减少 咋整呀

应该是A,因为这是一句被动态的句子,而只有及物动词才能构成被动态来用,所以该用cut down(被降低)而drop是跌落的意思,被跌落讲不通,所以如果不用was就可以了.
去年,该机构的收入降低了四分之一.