我真后悔当初没给他打电话也没给他写信告诉他,他对我而言很重要.Mr.Hahn could have taught at any college in the country,but he chose to stay at the secondary level.He dian't think teaching college-age people was any more important than teaching boys and girls of fourteen to eighteen.He was the kind of personwho gave teachers the right to be proud to be teachers解决了你的第一个问题就要先采纳，要按规则做事，有问题要再重新提问。