Both my father and my mother _______ playing tennis when they were young.
A. like B. likes C. liked D. to like
Both my father and my mother _______ playing tennis when they were young.
A. like B. likes C. liked D. to like
C 由时间状语when they were young可知此处应用一般过去时，故主句中的谓语动词应
用like的过去式liked。