`text{XI :}`
`text{1.}` I am afraid that the air pollution in our city is getting worse and worse.
`text{2.}` We are sure that environmental pollution will be controlled.
`text{3.}` If the sea level rises, there will be floods in many parts of the world.
`text{4.}` If many people lose their homes and land, they will live in hunger and poverty.
`text{5.}` Why are many countries spending much more time and money doing research on energy from sun, the waves and the wind ?
`text{6.}` We can save natural resources by using solar energy instead of fossil fuels.
`text{7.}` We can use the Internet as an effective way for self study.
`text{8.}` In Paris, he met many friends who encouraged him in his writing career.
`text{9.}` We shouldn’t swim in this river because its water is highly polluted.
`text{10.}` Although he has a very important job, he isn’t particulaly well-paid.
