He is clever boy that he can solve many difficult problems.
A. so a, so
B. such a, so
C. such, such
D. so, so
网友回答
A. so a, so
(答案→)B. such a, so
C. such, such
D. so, so
解析：考查固定短语。clever boy 中心词是boy 故用such , 如此多的这是固定结构，故用so many 或者so much .这里是可数名词故用 so many . 故选B。