IV

1.If the sea gets warmer, the ice at the North and South Poles will melt.

2.If the ice at the North and South Poles melts, the sea level will rise.

3.If the sea level rises, there will be floods in many part of the world.

4.If there are floods in many part of the world, many people will lose their home.

VI

1.What would you do if you had a garden of your own?

-> If I had a garden of my own, I would plant a lot of trees and flowers.

2.If you had one wish,what would it be?

-> If I had one wish, it would be a computer for my birthday.

3.What would you do if you won Cl million?

-> If I won CI million, I would buy a big house.

4.What would you do to make our school ground greener if you were the principal?

-> If I were the principal, I would encourage my students to clean our school every week.

5.What would you do if you were the Earth Hour Goodwill Ambassador?

-> If I were the Earth Hour Goodwill Ambassador, I would find out many solutions to environmental problems.

mk chỉ làm đc bài này thôi,mong bạn thông cảm

VII.

Light pollution is not (1)as serious as water or air pollution. (2)Moreover it is the type of pollution that (3) occurs more in cities than in rural areas. In the past, we could sit out at night and (4) gaze at glittering stars in the sky and light from objects in the outer space. Nowadays, cities are covered with lights from buildings, streets, advertising displays, many of which direct the lights up into the sky and into many unwanted places. The real problem is that it is very (5) wasteful to apply light to almost everything at night. Millions of tons of oil and coal (6)are used  to produce the power to light the sky. Eye strain, (7)loss  of vision and stress are what people may get from light pollution. (8)too much light at night can harm our eyes and also harm the hormones that help us to see things properly.