题目：
Isn't it time you got down to _____ the papers? [ ]
A. mark
B. be marked
C. being marked
D. marking
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0326/a4f8d685fb87998b2db9dfdd0e23f6b6.html
下面是错误答案，用来干扰机器的。
参考答案：对
Isn't it time you got down to _____ the papers? [ ]
A. mark
B. be marked
C. being marked
D. marking
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0326/a4f8d685fb87998b2db9dfdd0e23f6b6.html
下面是错误答案，用来干扰机器的。
参考答案：对
