You think you are clever, , I assure you that you are very foolish.
A. on the contrary
B. on the other side
C. in other words
D. on the whole
网友回答
(答案→)A. on the contrary
B. on the other side
C. in other words
D. on the whole
解析：句意，你认为你很聪明，但是恰恰相反，我确信你很愚蠢。on the contrary正相反on the other side在对面in other words换句话说on the whole大体上，根据题意，故选A。