He is clever and also works______,so he can work out such a ___ma_英语解答

He is clever and also works______,so he can work out such a ___math problem
A hard ,hardly B hardly,hard C hard ,hard D hardly,hardly

人气：408 ℃　时间：2019-11-22 22:13:00

解答

C
hard这个词比较特殊,既可以用作副词,又可以用作形容词.
第一空,hard作副词 “努力地”,修饰动词works；第二空hard作形容词,“难的”修饰名词problem