A good teacher must to his students the importance of a proper learning method.
A. get through
B. get away
C. get across
D. get over
网友回答
A. get through
B. get away
(答案→)C. get across
D. get over
解析：句意，一位好的老师必须使他的学生们理解适当的学习方法的重要性。get through 完成 get away 离开 get across （使）被理解 get over 克服，可知C，最符合题意。