fail sth.和fail in sth.有什么区别?
fail sth.和fail in sth.有什么区别?
fail和fail in 有什么区别?
fail to do与fail (in) sth有什么区别啊
fail to do sth和fail in doing sth的区别
fail in sth..fail to do sth.啥意思?
forget to do sth和fail to do sth 的区别
fail后可接to do sth吗,不是接fail in doing sth?为什么?
fail和fail in用法
fail to do sth=?
fail in doing sth中的in能不能省略
fail 和fail in的用法区别和意思
fail的几种用法fail in sthfail in doing sthfail to do sthfail sth