单选题Thinking that the student

问题补充：

单选题Thinkingthatthestudentswerehavinganeveningclass,theteacherlefttheclassroom,_____.A.slowly and gentleB.slowly and gentlyC.slow and gentleD.slow and gently

答案：

B解析这题考察副词做状语，修饰动词left the classroom，句意是：认为学生在上晚自习，老师轻轻地慢慢地离开了教室。选B。