[选择题,2分]
Then the third grade note had opened the attack.

A. Then the third grade teacher began to speak ill of him.
B. Then the third grade note opened a way for him to be attacked.
C. When the third grade note was opened , words of criticism could be found.
D. When the third grade note was opened , words of criticism could be found.
出自:河南理工大学—大学英语2