-It was right to tell the teacher the truth．-But I regret that．It hurt my best f
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-It was right to tell the teacher the truth．
-But I regret ________ that．It hurt my best friend．
A.to do
B.doing
C.done
D.do
试题答案
B
regret doing sth．指“后悔做过某事”。句意“但我后悔那样做，我伤害了我最好的朋友”。