1) they football at the institute. (to play) 2) she emails. (not / to write) 3) did you english? (to speak) 4) my mother fish. (not / to like) 5) did ann any friends? (to have) 6) his brother in an office. (to work) 7) she read very fast. (not / to read) 8) did the flowers every 3 days? (to water) 9) his wife a motorbike. (not / to ride) 10) did elizabeth coffee? (to drink)

1. they play football at the institute. 2. she doesn't write emails. 3. did you speak english? 4. my mother doesn't like fish. 5. did ann have any friends? 6. his brother works in an office. 7. she doesn't read very fast. 8. did you water the flowers every 3 days? 9. his wife doesn't ride a motorbike. 10. did elizabeth drink coffee?

1 - It is known that thanks to Internet it is now possible for people to communicate with one another over the World in fast and cheap way.

2 - It should be noted that on beginning the Department of Defence in USA wanted an extremely safe way of sending message in case of nuclear attack. Thus the Internet was first invented as an internal project to link computers for common safety.

3 -  It is reported that British physicist, Sir Timothy Berners-Lee, designed and build the first site browser and editor, as well as the first web server HTTPD. We can click a hypertext which contains a chains of words and the system will link to site which contain the related words.

4 -  Much attention paid to a question how  does the global system work via telephone lines which are connected to computers.

1.  keeping healthy means caring for your body so you have enough energy. these include things like eating foods that are good for you and getting enough exercise.2.  the bulk of food consumption should consist of fruits, vegetables, whole grains, and fat-free or low-fat milk products. 3.  variety, balance and moderation are three of the most important concepts to keep in mind for healthy eating. 4.  balanced diets include the right amounts of carbohydrates, proteins, fats and other nutrients important to health.  5.  a healthy diet could make your skin glow. 6.  a well-balanced diet could improve your mood. people who eat more fruits and vegetables tend to report better mental health in studies. 7.  eating right could boost your energy and enhance your athletic performance. 8.  eating right could protect your memory. studies have found people who follow healthy diets are less likely to develop dementia and alzheimer's. 9.  a major review of nutrition research found that a healthy diet can improve how long and how well you sleep. 10.  a ‘portion’ means the amount of food that fits in your hand. when you eat more than what your body needs to keep healthy and energised during the day, the extra bits can turn into fat.