Напиши a/an или some перед этими словами

Is there any ...Yes , there

1. If there are a few firms in an industry, the change in the behaviour of one firm can influence other firms. 2. Can developing countries enter the European Union? -No, they can't. 3. The firm may increase its profits by means of new materials or technologies.
4. Any crisis in the economy of the USA can seriously influence the economies of other nations. 5. Any country must follow some rules in international trade. 6. Can Russia supply its population with necessary amounts of gas and petrol?- Yes, it can. 7.British farmers could not ensure the required quality of meat when there was an infection among animals a few years ago. 8.You must have a special licence to import or export exotic animals.

I`ve been studying at high school. I like studying, so this process isn`t difficult to me. I`m good at all subjects. Teachers liked me a lot, because i were hardworking at school. I have a lot friends from my last school, and we`re still in touch and have good relationships, one of my friends is going to visit me. Sure we`ll have fun and a lot interesting moments. I decided to go to study in Britain because I`d like to get good knowledge in English and good practice too. I`m going to be hardworking here too, not less than at my last school. My parents are ready to pay for my studying here, then I`m going to work and help my parents.