英语高手进!谢谢帮忙!急高手帮忙改错!一共有十处!谢谢了!给分.My mother was used to be a w

英语高手进!谢谢帮忙!急
高手帮忙改错!一共有十处!谢谢了!给分.My mother was used to be a worker in a machine factory.she worked very hard,but beacause the poor management in the factory ,she has to leave her job two years ago.where she had worked for more than 20 years. to help supporting the family she tried his best to find another job .after few months. she finally got a work as a bus conductor on a long distance bus .every morning.she goes to work at6:30 and returns back at 9: 00in the evening,i know she is very tiring after a day's work.and she never talks about it .to show my love .i study hard at school