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