Вставте пропущене слово
1) He tied his dog up to prevent it _ running away.
2) I came _ a very old painting in an antique shop last weekend.
3) I joined the gym in _ to keep fit.
4) My brother _ his bike to school every morning.
5) David has _ been to Paris. He knows the city very well. ​

mobile phones ,keeping fit

mobile phones entered our life not long ago, but today we can’t imagine our life without them. some doctors say that they are very harmful to the health, especially to the health of children.

the mobile phones emit electromagnetic radiation, and a number of different scientific institutes claim that this radiation is really very harmful, though still there is no hard evidence that showed that mobile phones caused harm in real humans. i try to talk over my mobile phone as less as possibleto avoid the health risks.

Three men entered the room and everybody stood up. the old women were sitting on the bench yesterday at 6 p.m. our children like ice cream very much. don’t forget to clean your teeth. oh, you are standing on my feet! there many geese and sheep in the farm.   i am afraid of any mice. there are deer and oxen in the zoo.

1. i exercise regularly in summer but more to do in winter. 2. she usually walks slowly but now she is walking even   faster . 3. nina speaks loudly but mary speaks even   louder . 4. he runs fast, than other boys. 5. i don’t sleep enough, less   than 8 hours. 6. he behaves badly, than other boys. 7. i smile often, more than my sister. 8. peter lives far from school, but ann lives closer .

я думаю, что  4 и в 6 предложениях ничего изменять не надо. может я ошибаюсь.

ответ в)

никакие артикли не нужны