我有三个作业，请帮忙！
1.用英语写短信。信的大意是：
我叫李平，是英语系学生会主席。写一封信给王教授，请他做一个有关中国历史的报告。注意信中要包括目的、时间、日期和地点。
2.用英语写作文。内容要求是：
（1）在中国自行车是最为流行的交通工具。
(2)骑自行车有许多好处.
(3)自行车的未来......
3.用英语写作文。内容要求是：
(1)一些人喜欢住在城市,因为城市生活有许多便利.
(2)但有些人喜欢住在农村.
(3)我认为,......

作文一：
May 1th,2005
Dear Professor Wang:
On behalf of the Student Union of the English Department, I am writing to invite you to give a lecture on Chinese history.
We have planned to have such a lecture at 2:30 p· m. in Lecture Hall 419, on May 10.
Looking forward to your lecture. Inform us in advance if you can not come.
Sincerely yours,
Li Ping


作文二：
The Bicycle in China
The bicycle is the most popular means of transportation in China. China is a country “on bicycle wheels”. People ride them for various purposes such as going to and from school and work. Bicycles are very cheap and easy to buy in China.
There are many advantages to riding a bicycle. First, using a bicycle can greatly help reduce the air pollution in many big cities. Second, people can improve their health by riding a bicycle.
The future of bicycle will be bright. In some European countries, city governments have arranged pedestrians to use “public bicycles” to travel round the city center free of charge.

作文三：
Where to live —in the City or in the Country
Some people like living in the city because city life has many advantages. They think there are more job opportunities in cities, life there is more colorful and meaningful than that in the country, and there are more modern conveniences in cities for people to enjoy.
But some other people prefer to live in the countryside. They say life in the countryside is closer to nature and better for their health, life there is quieter and that country people are more honest than city people.
I would like to live in a city when I am young to earn enough money and I live in the countryside when I am old for having a quite life.