–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
网友回答
A. has graded
B. is graded
(答案→)C. is being graded
D. is grading
解析:句意:你的作业交了吗?--是,交了,我猜现在正在被批改。因为时间是now,而且schoolwork和grade是被动关系,用现在进行时的被动,所以选C。