She can't understand people who talked f______.麻烦各位哥哥填上,
问题描述：
She can't understand people who talked f______.麻烦各位哥哥填上,
答
fast就可以了.fast可以做副词,表示“快”.这句话的意思就是：她理解不了那些说话快的人.who talked fast是定语从句,修饰people.