1. It is a group of computers connected so that they can communicate.
2.Lots of different networks are joined to produce the world’s largest group.
3.Some of the networks are run by government bodies.
4.More and more networks are added // are being added all the time.
5.When you tell the system who you are it decides if it wants to let you use its services.
6.It makes it possible for you to communicat with all these people.
7.The president of isoc suggested that the Internet could reach 1 billion users soon.
Объяснение:
Надеюсь
I. If the students had practiced harde they would have passed the exam.
2. If the form had been filled in correctly you would have got the result.
3. If someone had told us about the change earlier we would have been here in time.
4. If they hadn't left their money at home they would have bought the car.
5. If he hadn't lent Jim his money he would have bought the present.
6. If he hadn't got up so late he would have caught the train.
7. If his wife hadn't bought a new coat they would have had enough money to pay for the house.
8. If the film hadn’t been so interesting she would have read the book.
9. If the problem hadn't been so urgent they wouldn`t have disturb us.
10. If I hadn’t passed my exam I wouldn`t have gone to the sea.
11. If she hadn't reminded me about his birthday I would have forgot to take the present.
Объяснение:
2: I never waste my money.
3: Najim doesn't often play tennis.
4: Akiko and Toshi usually stay at home in the evening.
5: Why are you always late?
6: I rarely work late on Fridays.
7: Mary hardly ever deals with customers.
8: I occasionally work in a team.