Isn't it time you got down to the papers?A. markB. be markedC. being markedD. marking

发布时间：2020-08-17 09:19:00

Isn't it time you got down to      the papers?
A. mark
B. be marked
C. being marked
D. marking

网友回答

A. mark
B. be marked
C. being marked
(答案→)D. marking
解析：“got down to”中的“to”是介词，因而要用动名词作宾语，而动名词“marking”与其逻辑主语“you”是主动关系。
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