Английский язык!! ! Помогите, пожалуйста, перевести

1. I think I am an expert in this sphere. I have been working at/ on this project for a month. I have already studied a lot of articles and publications.
2. This company has been selling its products in the world market for 5 years. The goods are in demand.
3. Some rival companies appeared in the market, what caused a fall of prices.
4. They have been working with Toyota since 1990.
5. Hasn't he given up the idea of going to/ entering International business school yet?
6.How long have you been cooperating with this firm?
7.I don't understand why our company management decided to break a contract with this firm? They have been our partners for a long time.
8. Unfortunately, we have problems (some problems appeared) in our European office, that's why (so) I made up my mind to stay and work it out.

1. I consider myself an expert in this area. I'm working on this project amonth. I have studied quite a lot of articles and publications. 2. This company sells its products on the world market 5 years. Goods are in demand. 3. Appeared on the market several competing companies, which caused a fall in prices. 4. They are working with Toyota since 1990. 5. He had not yet abandoned the idea to enter the international business school. 6. How long do you work with this company? 7. I don't understand why the management of our company has decided to terminate the contract with this company. They have been our partners for a long time. 8. Unfortunately, we have problems in our European office, so I decidedto stay and sort it out.