The problem starts here. Cars burn gas, factories and power plants burn coal and emit toxic fumes. Thus, the air we breathe becomes polluted.
Also, the air is polluted by acid rain. When it rains, this pollution hits trees, houses, buildings, cars, clothes, everywhere!
Pollution of water and soil. When acid rain falls into lakes, streams, rivers and seas, they become toxic. Acid rain poisons trees and plants, causing damage to buildings and objects.
The good news is that governments are trying to reduce air pollution that causes acid rain. Some industries have long used new technologies to make factory smoke less harmful to the environment. But we need to do more!
1 this book was read by me long ago.
2 my watch was broken by him
3 the rule was explained to the students by the teacher
4 the room was cleaned by him yesterday
5 he was woken up at 7 o'clock by his parents
6 sister was taken to the doctor by her brother
7 Dill's brother was met at the railway station by her
8 this toy was made with his own hands
9 grandfather is forgotten by his grandchildren
10 the best book was given me as a present by him
1 the hometask was done yesterday
2 was built
3 was read
4 was(were) bought
5 was destroyed
7 are protected
6 was made
8 was eaten
9 is done
10was solved
11was worked out
12was studied