To my surprise, the manager 30 dollars from my salary without any good reason.
A. cut off
B. held up
C. brought down
D. kept back
网友回答
A. cut off
B. held up
C. brought down
(答案→)D. kept back
解析：keep back 意为“扣下，留下，阻挡，隐瞒”；hold up意为“举起，支撑”；bring down 意为“打倒，击落，打死，降低”；cut off 意为“切断，断绝”。