【正确答案】:
THERE MUST BE MANY SIMPLER AND MORE EFFECTIVE WAYS OF ASSESSING A PERSON'S TRUE ABILITIES. 
【题目解析】:simple变为比较级,在词尾加r。effective变为比较级的时候,要在词前加more。
THERE MUST BE MANY SIMPLER AND MORE EFFECTIVE WAYS OF ASSESSING A PERSON'S TRUE ABILITIES.