1."The burning of fossil fuels leads to air polution"he said

-> He said the burning of fossil fuels led to air polution .

3."Smoking isn't allowed in this areas"brother said

-> My brother said smoking wasn't allowed in that areas.

4. " Your essay about the global warming is very specure and logical", teacher said

-> My teacher said my essay about the global warming was very specure and logical

5."Noise pollution is one of the serious problem in big cites," she said

-> She said noise pollution was one of the serious problem in big cites

$_Study well_$

1."The burning of fossil fuels leads to air polution"he said

⇒ He said the burning of fossil fuels led to air polution.

3."Smoking isn't allowed in this areas"brother said

⇒ My brother said smoking wasn't allowed in that areas.

4. " Your essay about the global warming is very specure and logical", teacher said

⇒ My teacher said my essay about the global warming was very specure and logical.

5."Noise pollution is one of the serious problem in big cites," she said

⇒ She said noise pollution was one of the serious problem in big cites.