A certain percent of your salary is by the employer as insurance payments.
A. kept away
B. kept out
C. kept up
D. kept back
网友回答
A. kept away
B. kept out
C. kept up
(答案→)D. kept back
解析：考查keep 的词组。 Keep back留下，阻止 keep away远离，不接近 keep out阻止进入 keep up 坚持，继续 意为，你工资的一定比例被你的老板留下来用来支付你的保险。