Допишите разделительный вопрос: пример: they are studying history, arent they? 1. computers are found everywhere and used sphere of lite, _? 2. a database programme is used for searching and sothing records, _? 3. it makes wotk with great amounts of data much quicker, _? 4. calculations without a computer could have taken several month, 5. computer helps puplis to study 6. computer viruses can cause a lot of trouble, _?

1. Computers are found everywhere and used sphere of lite, aren't they?
2. A database programme is used for searching and sothing records, isn't it?
3. It makes work with great amounts of data much quicker, doesn't it?
4. Calculations without a computer could have taken several month, couldn't they?
5. Computer helps puplis to study effectively, doesn't it?
6. Computer viruses can cause a lot of trouble, can't they?