An excellent teacher is believed to be one who cares about his students but asks for nothing .
A. in turn
B. in short
C. in return
D. in general
网友回答
A. in turn
B. in short
(答案→)C. in return
D. in general
解析：句意：一位优秀的教师被认为应该喜欢他的学生，却不求任何回报。in turn轮流；in short简而言之；in return作为报答；in general一般而言，选C。