keep doing和keep sth doI was so tired that i couldn't keep my eyes ______.A.opening B.open C.opened D.to open.为何选B而不是选A?

英语keep短语问题keep sb doing sth 和 keep sb from doing sth 的区别! keep sb.+形容词和keep sb.doing sth. leave sb doing sth 和keep doing sth区别 keep有keep doing sth.keep do sth .keep to do sth .请把用法和例句留下 13,appreciate doing sth 14,catch sb doing sth 15,consider doing sth 16,devote to doing sth 17,keep...doing sth 和 keep on doing sth keep doing sth 和keep on doing sth 有什么区别 Keep on doing sth和keep doing sth有什么区别 keep sb/sth adj.和keep sb/sth doing sth的区别 keep sb./sth.doing sth.和keep sb./sth. +形容词的区别 求例句 keep sb doing sth 和 keep doing sth 区别 和go on doing sth有什么区别 keep on doing sth与keep doing sth 的区别 keep sb doing sth例句 keep doing sth kept remembering. keep sb doing sth 和keep sb to do sth 有什么区别啊 Keep sb do sth和keep sb doing sth 的区别 keep to do sth keep doing sth的区别 keep sb doing sth 和 keep sb doing sth 有什么不同?各强调什么?sorry是keep sb do sth keep…to oneself 的意思和 keep…doing sth的意思