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1.Read the following pasage and then choose the best option to fill in each gap. (1.0point) Much of our waste, especially waste and smoke (1) from.......... electric-powered stations, the chemical industry and heavy industry, is very dangerous (2)......... die in the lakes, rivers and seas; forest trees die, too. Much of this dangerous waste goes into the (3)...... by the wind. The Earth is our home. We should take care of it, for ourselves, and for our children and grandchildren. This means we have to keep our (4)........... green and clean. The importance of this task is pinned out by ecologists- thể scientists should study the relations between living things and the environment. However, each of us must đó everything to keep the land, air water clean. 1.a.houses. B.schools. C.factories. D.restaurant. 2.a.plant. B.fish. C.soil. D.Tree 3.a.air. B.river. C.soil. d.water. 4. A. House. B. Street. C. Environment. D. Air.
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Ex1 : điền vào chỗ chấmThe 10 most expensive cities in the world have been named . The 3 that are at the top of the list are Singapore , Zurich and Hong Kong . If you decide on(1)................... them , be warned . These are the places (2).................. people pay the most for basic necessities , not just luxuries . There are various reasons why a city can be expensive . One is that the average salary is high . When that's the case , everything else costs more too . So even if someone(3)................. a good living ,the have to spend more to get what they need . While the Swiss , for example , may be(4).................. to their high prices , visitors are not . Tourists hoping to get a barhainon a Swiss watch or a cuckoo clock are likely to be disappointed , even if they shop around are compare prices . Travellers don't(5)................... make expensive purchases , of course , but a holiday isn't much fun when you can go bankrupt essentials like bus tickets , restaurant meals and museurm entry fees .

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