fail in doing sth中的in能不能省略

fail in doing sth中的in能不能省略 fail to do sth和fail in doing sth的区别 fail的几种用法fail in sthfail in doing sthfail to do sthfail sth fail to do sth是未能做某事?还是失败做某事?有没有fail in doing sth? fail in sth..fail to do sth.啥意思? fail sth.和fail in sth.有什么区别? sb spend sometime (in) doing sth 中的 (in) doing sth 是什么成分? Help sb in doing sth中的in可以省略吗?. i think doing sth have some difficulty (in) doing sth.中的 difficulty可数吗 fail to do sth的同义词组是什么?.别跟我说fail in doing sth啊.he failed to catch the early bus this morning.(改为同义句)He _____ ______ to catch the early bus this morning. join sb in doing Sth 中的in可省略吗:-).join in doing Sth 等于take part in Sth,后者不能省略 have difficulty in doing sth .have trouble in doing sth spend ...in doing sth这个in doing sth是什么语? have fun( in) doing sth be interested in doing sth be busy in doing sth be long in doing sth