Those ____ not only from books but also through practice.填who learn还是that learn?

Those (who) not only from books but also through practice will succeed.
——those指人的时候,后面的定语从句要用who引导,不用that.Why?。。。求举例Those (people) who = They/People who = Such (people) as + 复数动词：意为“凡是…的人们”。这是 those who 的复数句型，但亦也可以用下面的单数句型来表达相同的意思：He/One who = Anyone who = Whoever + 单数动词：意为“凡是…的人”。请看下面的例句：Those who have money do not want for friends. (凡是有钱的人都不会缺乏朋友)= Such as have money do not want for friends. (在这句中，as是关系代词)= He who has money does not want for friends.= Whoever has money does not want for friends. (Whoever = Anyone who)下面两句分别是 those who (主格) 的宾格 those whom 和所有格 those whose的应用：No distance can sever those whom the fate unites. (有缘千里来相会)Almighty Heaven is not indifferent to those whose hearts are earnest. (苍天不负苦心人)