问题
选择题
5.---Have you handed in your schoolwork yet?
---Yes，I have. I guess it ____ now.
A．has graded
B．is graded
C．is being graded
D．is grading
答案
答案：C
now暗示该空表示“现在正在被打分”，因此应填现在进行时被动语态动词形式is being graded。
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