问下 keep sth to还是for sb?

问下 keep sth to还是for sb? sth to sb 还是 sth for sb bring sth to sb 还是for sb express sth for sb 还是to sb thank sb for sth 还是thank to sb for sth 是send sth to sb 还是send sth for sb 是offer sth. for sb.? 还是 offer sth. to sb.? supply sth to sb 还是 supply sth for sb collect sth.to sb还是 collect sth.for sb. bring sth to sb还是bring sth for sb 请问：bring sth.to sb.还是bring sth.for sb. 是leave sth.to sb.还是leave sth.for sb.