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Because the climate is changing, the earth is getting warmer
Unless we stop cutting down so many trees, we endanger our oxygen supply
When people begin to recycle, they generate much less trash
Even though the ozone layer is necessary for human existence, we are damaging the ozone layer
Sue was exposed to radiation when she was young, so she is suffering from skin cancer
the human race is only one small species in the living world. many other soecies (1)exist on this planet. however, human beings have a great influence on the (2) rest od the world. they are changing the environment by building cities and villaghes (3)where forests once stood. they are changing weather(4)conditions by citting down trees in the forests. and they are destroying the air by adding(5)pollutants to it.
it can be said that human beings are changing the environment in all(6)respects in two serious consequences. the first is that many kinds of rare animals are killed. the second is that the environment where these animals are living is (7)badly destroyed. as a result, the number of rare animals is(8)decreasing so rapidly that they are in danger of(9)extinction
The world ocean of are so vast that they can cope with the present levels (pollute)___pollution_______(1)However, little is known about the long term effects of such slow poisoning. The most serious problem of modern time is that man is destroying the earth's (2)___natural______ (nature) resources and trasforming huge areas into wasteland. As a result, it is becoming (extreme)__extremely____(3) difficult to grow enough (4)__to feed_____(feed) the world's rapidly (5)___increasing___( increase) population. A way of protecting all the wildlife on the earth must also be (6)__found_______(find) as many species are in (7) ____danger___(dangerous) of disappearing completely from the face of the earth. The danger, however, are not confine (8)_____solely_____(sole) to the land and the sea. The smoke in the atmosphere, for example, is increasing so mu sunlight has been (9)____reduced_____(reduce) in many cities. Man's whole (eavironmental) ____environment____ (10)is being changed in a serious way
The world’s oceans are so vast that they .can.... cope with the present level of pollution. However, little is known about the long-term effects of .such... slow poisoning. The most serious problem of modern time is .that.... man is destroying the earth’s natural resources and transforming huge areas into.... wasteland. As a result, it is becoming extremely difficult to grow enough ..to... feed the world’s rapidly increasing population. A way of protecting all the wildlife on the earth must also be found.as.... many species are in danger of disappearing completely..from... the surface of the earth. The dangers, ..however..., are not confined solely to the land and the sea.The smoke in the atmosphere, for example, is increasing so...much.. that the amount of sunlight has reduced in many cities. Man’s ..... environment is being changed in a serious way.
1. The climate of the earth is changing rapidly, so human's health is aslo influenced.
-> If...... the climate of the earth were not changing rapidly, human's health would not also influenced. - Câu ĐK loại 2
2.Today is Sunday, so the children don't go to school.
-> If......today were not Sunday, the children would go to school. - Câu ĐK loại 2
3. He worked lazily, so the boss sacked him.
-> If........he had not worked lazily, the boss would not have sacked him. - Câu ĐK loại 3
4. She is disappointed because his exam result is bad.
_> If.......his exam results were not bad, she would not be disappointed. - Câu ĐK loại 2
dạ con cảm ơn cô ạ