At last our head teacher who broke the window of the classroom.
A. looks for
B. finding
C. found
D. found out
网友回答
A. looks for
B. finding
C. found
(答案→)D. found out
解析：词义辨析。looks for寻找；finding发现； found 发现；found out查明。句意：最后我们的校长查明了是谁打碎了教师的窗户。故选D。原答案有误。