Some of these sentences need a/an. Correct the sentences which are wrong. The first one is done for you as an example.

1. Joe goes everywhere by bike. He hasn’t got car. WRONG: a car

2. I don’t like violence in films .………………………..….

3. Ann was listening to music when I arrived ….……….

4. It’s pleasure to meet you here. …..…………………...

5. We went to very nice restaurant last weekend. .…

6. I use toothbrush to clean my teeth. ………………..…

7. I clean my teeth with toothpaste. …………..…….…...

8. I think baseball is very good game. ………..……..…..

9. Can you smell paint? …………………………

10. Can you tell me if there’s post office near here? .…..

11. My brother works for insurance company in London. ………………………………………..

12. Liz doesn’t usually wear jewellery but yesterday she was wearing necklace. ...……………...

13. John has got job interview tomorrow. ………………..

14. We need petrol. I hope we come to petrol station soon. ..……………………………….……..

15. I wonder if you can help me. I have problem. ...…………………………………….

The History of Computer DevelopmentThe rapidly advancing field of electronics led to construction of the first general-purpose electronic computer in 1946 at the University of Pennsylvania. It was Electronic Numerical Integrator And Computer or ENIAC, the device contained 18,000 vacuum tubes and had a speed of several hundred multiplications per minute. Its program was wired into the processor and had to be manually altered.Later transistors appeared. The use of the transistor in computers began in the late 1950s. It marked the advent of smaller, faster elements than it was possible to create with the use of vacuum-tube machines. Because transistors use less power and have a much longer life, computers alone were improved a lot. They were called second-generation computers.Components became smaller and the system became less expensive to build.Modern digital computers are all conceptually similar, regardless of size and shape. Nevertheless, they can be divided into several categories on the basis of cost and performance.The first one is the personal computer or microcomputer, a relatively low-cost machine, usually of desk-top size. Sometimes they are called laptops. They are small enough to fit in a briefcase. The second is the workstation, a microcomputer with enhanced graphics and communications capabilities that make it especially useful for office work. And the server computers, a large expensive machine with the capability of serving the needs of major business enterprises, government departments, scientific research establishments. The largest and fastest of these are called supercomputers.A digital computer is not actually a single machine, in the sense that most people think of computers. Instead it is a system composed of five distinct elements: a central processing unit, input devices, memory storage devices, output devices and a communications network, called a «bus» that links all the elements of the system and connects the system itself to the external world.

It is hard to imagine life without food and drinks.Eating and drinking helps to maintain our health.With food and drinks we receive vitamins which are necessary for the human organism.At last,each of us has his/her favorite food and drinks because eating and drinking are among the greatest pleasures of life. Every country has its traditional cuisine. While travelling to other parts of the world we can taste the food and drinks of other nationalities. Traditional food of Italy and France are very popular all over the world.You can enjoy spaghetti,pizza and famous Italian wine in an Italian restaurant in your country.Chinese,Japan and Indian restaurants are also popular in many countries. What to eat and what to drink depends on what you like.Tastes differ. People have to eat. Everyone needs food and drinks. :)