Computer science or computing science is the study of the theoretical foundations of information and computation, and of practical techniques for their implementation and application in computer systems. it is frequently described as the systematic study of algorithmic processes that create, describe and transform information. according to peter j. denning, the fundamental question underlying computer science is, "what can be (efficiently) automated? ". computer science has many sub-fields; some, such as computer graphics, emphasize the computation of specific results, while others, such as computational complexity theory, study the properties of computational problems. still others focus on the challenges in implementing computations. for example, programming language theory studies approaches to describing computations, while computer programming applies specific programming languages to solve specific computational problems. the general public sometimes confuses computer science with vocational areas that deal with computers (such as information technology), or think that it relates to their own experience of computers, which typically involves activities such as gaming, web-browsing, and word-processing. however, the focus of computer science is more on understanding the properties of the programs used to implement software such as games and web-browsers, and using that understanding to create new programs or improve existing ones.
найдите в тексте все предложения в passive voice, определите их видо-временную форму и образуйте отрицательную и вопросительную форму.
2. I (went) to bed at ten o'clock yesterday.
3. My brother ( washes) his face every morning.
4. Yesterday he ( washed) his face at a quarter past seven.
5. I (do not have) history lessons every day.
6. We (did not rest) yesterday.
7. My brother (did not drink) coffee yesterday.
8. My mother always ( takes) a bus to get to work, but yesterday she (did not take) a bus. Yesterday she ( walked) to her office.
9. Do you ( talk) to the members of your family every day? - Yes, I do. But yesterday I (did noto talk) to them: I (was) very busy yesterday.
10. Did you ( come) home at six o'clock yesterday? - - No, I didn't. Yesterday I ( came) home from school at half past eight. I (was) very tired. I (had) dinner with my family. After dinner I (was) very thirsty. I (drank) two cups of tea. Then I ( rested).
11. Does your sister ( go) to school every day? - - Yes, she does.