A possible version:
Dear Mr. Li,
My favorite class is an open and free class where I can learn by myself and discuss in groups, which is good for my development, I think.
I still remember an unfettable experience in my maths class. Several days ago I spent a long time working on three maths problems in class, but they were too hard for me to work them out．So I had to ask my clas *** ates for help． After a considerable discussion，we solved the
problems in our group. How excited I was!
Having such a great experience, I want to give o suggestions．Firstly，please don't teach us too much in class. We need about 30 minutes to learn by ourselves and work in groups every class．Secondly，please provide us with some laps if possible，so we can surf the Inter easily. No doubt, we need an open and free class，you see.
That's all. Thank you.
Best wishes，
Zhang Hua
雨，“哗哗"地下著，“轰隆隆”，又是一阵雷声，我抬头一看，九点半了，爸爸妈妈都还没回来，雷雨天又不能看电视，这可怎么办，我心里有一种说不出的孤独感。
天特别黑，我打开台灯，掏出本子，做数学题，以给自己壮胆。
忽然，一阵风袭来，一道闪电放出强烈的光芒，窗外有几个黑影摇摇晃晃，好像要向我家走来，我赶紧熄了灯，心里害怕极了，心想：坏人来了怎么办？我一个人能抵挡得了吗？手无缚鸡之力，身无飞檐走壁之功，是坐以待毙，还是奋起反抗？我是男子汉，只能选择后者。于是，我关紧窗户，用椅子顶住门，这么说，可是手仍有些发抖，腿仍有些发软。
待了一会儿，风又刮了起来，风卷著雨。我两手死拽著窗户，双眼紧盯着前方，发现窗外摇晃的黑影原来不是人，而是几棵小树，风像鞭子一样，抽打着小树，小树摇摆着，挣扎着，无力直起腰来。可怜的小树啊，大难临头，你将怎么活？艰难曲折，你将怎样成长？
夜深了，风渐渐地弱下来，雨也渐渐的小了，我心系小数，毫无倦意，继续向窗外张望着。这时，我发现小树个个精神抖擞，充满了经受一番风雨洗礼后的喜悦。心里一高兴，我梦里不知身独处，一觉睡到大天亮。
醒来后，我感悟到：任何生命的成长都不是一帆风顺的。小树只有经过风吹雨打，才能成长为参天的大树。人生又何尝不是如此？孟子说的好：“天将降大任于斯人也，必先苦其心志，劳其筋骨，饿其体肤，空乏其身，行拂乱其所为，所以动心忍性，曾益其所不能。"
"Dear XXX,
How are you? It has been a long time since we last contacted each other.
How are you doing in University? Is it stressful? Mine is great. I feel more relaxed and we have more freedom now.
Next month, we will be holding a New Year celebration, which will also be our class reunion. I really hope that you will be able to attend. It will be a great chance for us to catch up with one another and I believe we will have a great time.
I will be anticipating you reply! Hope to see you soon.
Yours sincerely,
XXX"
英语作文：
Hello Wang Bing,
How are you?
I'm writing to let you know that there is recruiment advertising for the position of sale manager in an electronic manufacture pany. I think you are qualified for the position.
Please call 12345678900 for Ms Zhang if you are interested.
All the best,
Li Hua.
Dear Mike
I'm glad to tell you that i will have a long holiday this winter , And i want to share my plans with you ,The following is my arrangement
As you know ,the Spring Festival is ing So i will spend some days staying wite my family we will have a big dinner together in the eve of the new year
Then i will visit my relations during the first week .If possible ,my family will go on a trip to DaLian .Ibelieve it will be very intreseting
That's all .How do you find it ?wish you ahappy year too
Waiting for your return
yours
Sincerely
Last year I have been to the Sanya to travel.I was seen the beautiful beach,and I was skined in the sea.the sea is very
large and it looked blue and green.But I am not good at swi
mming,so I hadn't to swim for a long time.Then Iwent to Wuzhi
mountain.There was a forest,so beautiful.I was bought some presons for my uncle and aunt.
At the last,I had to take furry to get to Zhanjiang and took
新年差不多过了，我准备和爸妈动身去看望爷爷奶奶。我听说爷爷奶奶家有一位刚出生的小堂弟在那里我特别兴奋恨不得马上到那。
一到爷爷奶奶家我就直奔小堂弟那逗他开心，我对他说：“我是你姐！”他听完以后就不假思索地说了一声：“恩！”我听完以后大吃一惊，马上“登出了这条暴大新闻”，家人们听了以后都很吃惊，马上叫我重试一遍，我重试了一遍没想到真灵验！事后我脑里还在想着：小堂弟到底听没听懂？小孩真是让人捉摸不透，虽然我也是小孩。接着小堂弟要换尿片了，我从来没见过这样的事，于是就跑过去凑热闹，没想到小孩竟然这么麻烦让每位父母都操透了心。换尿片看起来很简单做起来却难上加难，可是小堂弟未必怎么想过。时间一眨眼就过去了我以对小堂弟有了深厚的感情。总而言之有了他我就能增添乐趣。这个寒假真开心！
Dear tom:
I heard that you especially love apple ice cream, produce their own convenience and health, I took my way to share with you the following. First Wash apples, peeled dig core, cut into thin slices, Jiaocheng paste, add sugar and 1000 grams of water. Then add the boiling milk, stir, pour into a receptacle placed in the refrigerator to cool freeze branding. I hope you can be suessful.
Wang Jing
Last weekend, my friends and I spent a meaningful holiday.
In order to understand the rural life style,and to feel the beauty of nature. Saturday morning, we get up early, after breakfast, We are riding a bicycle,to the countryside. Along the way, we appreciate the different scenery. The air is very fresh, the birds are singing, and not so noisy as city. Because it is summer now, the flowers are everywhere, the leaves are very lush, the river is very clear, it is nice and cool . The mountain is green. We are like the environment here.
We enjoyed ourselves,it is very tired, but we felt very value, there's a chance we 'll e back.
上周末，我和我的朋友度过一个有意义的假期。
为了了解农村的生活方式，去感受大自然的美。星期六早上，我们早早起床，早餐后，我们骑着脚踏车，到农村。一路上，我们欣赏不同的风景。空气很清新，鸟儿在歌唱，又不太喧闹的城市。因为现在是夏天，到处都是鲜花，叶子很茂盛，河水很清，很酷。山是绿色的。我们很喜欢这里的环境。
我们玩得很开心，很累，但我们觉得很值，这是一个机会，我们会回来的。
I am writing this letter to you to express my concern about the sports facilities on campus. I have noticed that our university has very limited resources in terms of opportunities to participate in sports, especially given that the number of students on campus is increasing every year.
As we both know, sports are very important for the sound growth of young people. If they have aess to quality sports facilities, young people are able to choose a healthier lifestyle, to boost self-esteem and confidence, and to build a positive outlook and sense of achievement.
My proposal is to build a new sports area. It should be designed with soer players, basketball players, and ping-pong players in mind. It should have a different section for each activity and be available to students all year round. I believe such facilities will meet our sporting needs.
Thank you for your reading this letter.