Answer the questions. write down your answers. 1. what are you doing? - 2. what is your pet doing at the moment? - 3. is it raining now? - 4. where are you sitting? - 5. what are you looking at? - 6. what are yo writing with? - 7. what are you going to do after you finish this exercise? -

1) now i play a computer game. 2) at the moment, my pet is sleeping on the couch. 3) it's night. rain does not go. 4) i'm sitting in a chair. 5) i am not looking for anything. 6) i am writing homework. 7) after completing homework, i'm going to watch tv.

1. i'm not a pupil. i am a student 2. his brother is a pupil. he is at school 3. my parents are engineers. they are at work 4. are you a doctor? " no, i'm a teacher. " 5. your sister is a student? -no, she's an engineer. she's at work 6. her sister is not a secretary. she is a teacher 7. are they doctors? " no, they are pilots. " 8. is your sister at home? - no, she's at work. 9. our father is a scientist 10. his aunt is not a doctor. she is an actress 11. this is my book. she is on the table 12. my cousin is not a scientist, he is an engineer 13. this is a picture. they are on the wall. pictures are very beautiful 14. my grandmother is a pensioner. she's not at work. she is at home 15. are your children schoolchildren? - yes, they are schoolchildren

1. a computer is a machine with an intricate network of electronic circuits that operate switches or magnetize tiny metal cores. 2. the switches, like the cores, are capable of being in one or two possible states, that is, on or off; magnetized or demagnetized. 3. the machine is capable of storing and manipulating numbers, letters, and characters (symbols). 4. the basic idea of a computer is that we can make the machine do what we want by inputting signals that turn certain switches on and turn others off, or magnetize or do not magnetize the cores. 5. the basic job of computers is processing of information. for this reason computers can be defined as devices which accept information in the form of instructions, called a program, and characters, called data, perform mathematical and / or logical operations on the information, and then supply results of these operations. 6. the program, or part of it, which tells the computers what to do and the data, which provide the information needed to solve the problem, are kept inside the computer in a place called memory. 7. the program, or part of it, which tells the computers what to do and the data, which provide the information needed to solve the problem, are kept inside the computer in a place called memory.