1.air/am/that/afraid/th/city/pollution/in/our/getting/worse/and/is/worse/I.

i am afraid that the air pollution in our city is getting worse and worse

2.sure/that/be/environmental/we/pollution/will/are/controlled/.

we are sure that environmental pollution will be controlled

3.level/there/the/sea/If/rises/will/be/of/floods/in/the/many/parts/world/.

if level of the sea rises, there will floods in many parts of the world

4.lose/many/people/and/their/homes/land/,/If/they/will/and/live/in/hunger/poverty/.

if many people lose their homes and land, they will live in hunger and poverty

5.are/contries/many/spending/much/time/more/and/doing/money/resarch/energy/on/from/wases/sun/,/the/and/why/wind/?/

why many countries are spending much time and more money doing research on energy from the sun, waves and wind?

6.can/using/we/solar/natural/save/resources/by/energy/instead/fossil/of/fuels/.

we can save natural resources by using solar energy instead of fossil fuels

7.the/way/Internet/we/as/can/for/use/an/effctive/self-study/.

we can use the Internet as an effective way for self-study

8.writing/in/he/Paris/,/met/many/who/friends/him/encouraged/his/in/career/.

many friends who he met in Paris encouraged him in his writing career

9.should't/river/we/is/swim/in/because/this/water/polluted/highly/its/.

we shouldn't swim in this river because its water is highly polluted

10.although/job/he/isn;t/has/very/a/important/,/he/well-paid/particularly/.

although he has a particularly well-paid job, he isn't very important