问题补充:
The words that we should pay attention to on the blackboard.
A. being written
B. are written
C. is writing
D. writing
答案:
A. being written
(答案→)B. are written
C. is writing
D. writing
解析:考查动词时态。that we should pay attention to是定从,主句是The words on the blackboard,主语是复数,且和谓语是动宾关系,所以用被动语态。选B。