Active voice 1. i (not play) chess tomorrow. 2. he ever (be) to london? 3. where you (go) now? 4 we (travel) around europe last year. 5. she usually (read) in the evening. 6. what you (do) at 6 o'clock tomorrow? 7. listen! somebody (play) the piano in next room. 8. how many pages you (read) by 5 o'clock tomorrow? 9. he (not do) his homework yet. 10. he (teach) at school for five years when the war broke out. 11. hi! what you (do) here since morning?

1. I won't play chess tomorrow.
2. Has he ever been to London? 
3. Where are you going now?
4 We travelled around Europe last year.
5. She usually reads in the evening.
6. What will you be doing at 6 o'clock tomorrow? 
7. Listen! Somebody is playing the piano in next room.
8. How many pages will you have read by 5 o'clock tomorrow?
9. He hasn't done his homework yet. 
10. He had been teaching at school for five years when the war broke out.
11. Hi! What have you been doing here since morning?    

Environmental pollution is one of the largest problems in our today’s world. It can be defined as a contamination of air, water and land from man-made waste. Nowadays there aren’t any cities and hardly any rural areas that remain clean and unpolluted.There are a lot of different types of pollution among which the most recognized are air and water pollution, soil and radioactive contamination, littering, noise, light and thermal pollution. Unfortunately, most of the problems are the result of human activities. Indeed, the contradictions between man and nature are on a high level.People cut down forests and thus damage thousands of acres of land. First of all, the soil can be easily blown away and secondly, even if new trees are planted, they can’t bring back the old forests that were a part of a complex ecosystem that cleaned the air and made home for wildlife.Big industrial cities produce a lot of waste every day.

Объяснение:

I think VDNH is one of the most interesting places in Moscow. The territory of the exhibition complex is very large and beautiful. There are fountains and park areas.

There are many museums, an Oceanarium, a Robot Station, and a Sky Town rope park on the territory of VDNH. One can rent a bicycle in summer and skate in winter.

ПЕРЕВОД:

One of the most interesting museums is the Cosmos hall. One can look at aircrafts and spacesuits there. I would also recommend visiting the Interactive Architectural model of Moscow hall.

VDNH often hosts festivals, fairs, and other events.

It is impossible to see all the expositions of the complex in one day. I've been there several times, and I'd like to go there again.

Я думаю, что ВДНХ - это одно из самых интересных мест в Москве. Территория выставочного комплекса очень большая и красивая. Там есть фонтаны и парковые зоны.

На территории ВДНХ работает много музеев, океанариум, Робостанция, веревочный парк Sky Town. Летом можно воспользоваться прокатом велосипедов, а зимой - покататься на катке.

Один из самых интересных музеев - павильон Космос. Там можно посмотреть на летательные аппараты и скафандры. Также я бы рекомендовал побывать в павильоне Архитектурный интерактивный макет Москвы.

На ВДНХ часто проводят фестивали, ярмарки и другие мероприятия.

Все экспозиции комплекса невозможно осмотреть за один день. Я уже несколько раз бывал там, и хотел бы поехать туда снова.

Объяснение: