demand require request后面加DOING还是TO DO

demand require request后面加DOING还是TO DO require加doing还是to do require to do 还是 require doing 辨析require ,request,demand hard后面加doing还是to do refuse后面加to do 还是doing discover后面加to do还是doing? adjust to 后面加doing还是do? spend后面加doing还是to do? demand require request 怎么区分 demand doing ,to do require的用法.是sb require doing sth 还是 sb require to do sth?