短文改错 Mr Zhang is over sixty years old．He has retired．He is one of my respected t

Mr Zhang is over sixty years old．He has retired．He is one of my respected teachers．He teaches us

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chemistry when we were in Senior Grade One．He was old, and

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he taught us good．He tired his best to make his classes lively．

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Mr Zhang usually made good preparations for the lesson and was

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strict to us, too．Whenever we made mistakes in our homework,

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he would ask us to correct them．At that time, I was used to be

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poorly in chemistry．Mr Zhang often helped me with my studies

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very patiently．With his help, I had made rapid progress and

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caught with the class．He is always very kind to every student．

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As an experienced teacher, he is respected and loved by all

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