Most of the problems were due to human error.

　　多數(shù)問題都是人為錯誤造成的。

　　Most of the people on the course were professional women.

　　參加本課程的大多數(shù)人是職業(yè)女性。

　　She tried to be more positive about her new job.

　　她力求對新工作更有信心。