—Have you got your exam papers? —Not yet. I guess they _____ at this moment. 
#103131
A
are being graded
B
are grading
C
have graded
D
have been graded
推荐题目
He said to us that he ____the teacher’s instructions.
#100425
A
must follow
B
followed
C
follow
D
must have followed
I fixed my eyes upon the newcomer, wondering whether I ________ him somewhere before.
#99984
A
saw   
B
has seen   
C
had seen   
D
would see