问题
选择题
—Have you got your exam papers?
—Not yet. I guess they ________ at this moment.[ ]
A. are being graded
B. are grading
C. have graded
D. have been graded
答案
答案：A
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—Have you got your exam papers?
—Not yet. I guess they ________ at this moment.[ ]
A. are being graded
B. are grading
C. have graded
D. have been graded
答案：A