请帮我把这几句话翻译成英文.谢谢..

1.她省下(leave out)治病的钱帮助她以前的学生付大学学费(tuition fees)
She left out the money for curing the disease to help her former students pay the tuition fees for the study in the university.
2.林老师利用业余时间帮助成绩落后的学生
Mr. Lin makes use of the spare time to help the students who are lagging behind.
3.林老师总是把责任放在首要的位置
Mr. lin always gives priority to the responsibility.