Edison the way to solve the problem.
A. found out
B. sought for
C. invented
D. discovered
网友回答
A. found out
(答案→)B. sought for
C. invented
D. discovered
解析：seek意为“寻找”，可作及物和不及物动词。作及物动词时，可直接跟名词作宾语，如:He’s seeking an answer to the problem.作不及物动词时，后面须跟介词for才能接宾语。如:She sought for a solution to the problem.