—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 |
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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 |
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