When russian people send postcards.
-to whom they send such cards.
-what traditional cards are like.
-if the greetings cards have changed.
-where you can buy such cards.
-they send cards to people who are ill.​

ответ.когда люди посылают открытки. - кому они посылают такие открытки. - на что похожи традиционные карты. - если поздравительные открытки изменились. - где можно купить такие карты. - они посылают открытки больным людям

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.

the teenage period is the most important in our life. at this age people form their characters, interests. this time people especially need good advices and cure. it's a period when the person isn't a child, but he is becoming an adult. there are a lot of teenage problems. for example smoking, drugs, alcohol, generation gap. everybody knows them, but not everybody wants to pay attention on them. nowadays i think we should to do it. we should to spend special disscussion on this theame in inducation institution, to toughen punishment measures, but at the same time not to make them to do something.