9 Н. Вставьте нужное слово (shouldn't, answer, couldn't, had to, can't, come in, believe, difficult, must, helpless)
1. Why don't you help her? She is so We couldn't do it. 2. It was too 3. I know everything about him. You can 4. We are here! 5. I'm afraid I can't you at once him. 6. He has too much work. He .w meet you today 7. Why 8. He 9. She 10. He you come in time again? be there! Call once again! eat too much sugar. pay at once. AW and he SE

The United States of America is a very diverse country. Its nature, climate, population varies from the East Coast to the west, from the northern border to the southern.Climate is mostly temperate, but tropical in Hawaii and Florida, arctic in Alaska, semiarid in the Great Plains west of the Mississippi River, and arid in the southwest.Natural resources include coal, copper, lead, molybdenum, phosphates, uranium, bauxite, gold, iron, mercury, nickel, silver, tungsten, zinc, petroleum, natural gas, and timber.Natural hazards are a great deal of problems for the USA. Every year, they loose hundred millions of dollars, because of natural hazards. The USA is famous for hurricanes along the Atlantic and the Gulf of Mexico coasts and tornadoes in the Midwest and southeast; mud slides in California; forest fires in the west; flooding.Sometimes there are tsunamis, volcanoes and earthquakes happen. Earthquakes are very often in California.Talking about environment, one should add that air pollution results in acid rains in both the US and Canada. The US is the largest single emitter of carbon dioxide from the burning of fossil fuels.Water pollution from runoff of pesticides and fertilizers takes place here.Climate and Natural Resources.
Климат и природные ресурсы.
Соединенные Штаты — это страна контрастов. Природа, климат, население страны изменяются с восточного побережья на западное, с северной границы на южную.Климат на большей части умеренный, тропический на Гавайях и в штате Флорида, арктический на Аляске, полузасушливый на великих западных равнинах реки Миссисипи и полупустынный на юго-западе.Природные ресурсы включают: уголь, медь, свинец, молибден, фосфаты, уран, бокситы, золото, железо, ртуть, никель, серебро, вольфрам, цинк, нефть, природный газ и древесину.Природные катаклизмы представляют огромную проблему для США. Каждый год страна теряет сотни миллионов долларов из-за природных катаклизмов. США известны своими ураганами вдоль атлантического побережья и побережья Мексиканского залива, торнадо на среднем западе и юго-востоке, грязевыми оползнями в Калифорнии, лесными пожарами на западе, наводнениями.Иногда наблюдаются цунами, вулканы и землетрясения. Очень часты землетрясения в Калифорнии.Говоря об окружающей среде, необходимо добавить, что загрязнение воздуха выливается в кислотные дожди как в США, так и в Канаде. США — самый крупный «производитель» двуокиси углерода от сжигания ископаемого топлива.Имеет место и загрязнение воды из-за сброса пестицидов и удобрений.

1they didn't live in M.some years ag
where did they live some years ago?
2we didn't discuss the plan at the last meeting.
what did we discuss at the last meeting?
3he didn't stay in Kiev a month ago.
when did he stay in Kiev?
4we didn't work at this office last year.
where did we work last year?
5they didn't go on holiday together.
they went on holiday together,didn't they?
6these colours weren't fine.
what colours were fine?
7he didn't pay for everything.
what did he pay for?
8the students didn't speak English.
what language did the students speak?
9the lecturer didn't come in half an hour
did the lecturer come in half an hour or in an hour?
10we didn't send the telehram two days ago.
when did we send a telegram?
11it didn't take them two hours to get home.
how much time did it take them to get home?