问题
选择题
一Have you handed in your schoolwork yet?
一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
这道题可谓一箭“三”雕，即考查了时态、语态和词的转
换。从now可知，我的作业正在被老师批改，所以要用一般
现在时的进行时的被动语态。这里的grade是由名词“等级；
成绩”转换为动词“评阅”。故答案为C.