failed in doing sth

sb in doing sth devote oneself to sth / doing sth specialize in sth / doing have difficulty in doing sth .have trouble in doing sth succeed in doing sth.=( )( )do sth. be interested in doing sth be long in doing sth be busy in doing sth be sophisticated in doing sth spend ...on(in) doing sth ---------------------------------- have trouble in doing sth succeed in doing sth 造句 have confidence in doing sth