问题
选择题
Isn't it time you got down to ________ the papers?
A．mark
B．be marked
C．being marked
D．marking
答案
答案：D
“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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Isn't it time you got down to ________ the papers?
A．mark
B．be marked
C．being marked
D．marking
答案：D
“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。