All of my teachers but the math teacher he cheated in the exam.
A. doubt that
B. doubts that
C. doubt whether
D. doubts whether
网友回答
A. doubt that
B. doubts that
(答案→)C. doubt whether
D. doubts whether
解析：考查主谓一致和宾语从句。本句的谓语动词要和all of mu teachers保持一致；故使用复数形式；因为句子使用了动词doubt“怀疑”；表示是不确定的事情的怀疑，故使用连词whether引导宾语从句，句意：除了数学老师以外的所有老师都怀疑他在考试中作弊了。故C正确。