If students recycle and use recycled materials, they will save _________.

No/ house/ street/ older/ this one.

Why/ not/ we/ sing/ English song?

soil/ I/ do/ on/ pollution/ will/ a/ survey.

seven/ fifteen/ He/ to/ goes/ at/ work.

effects/ causes/ noise/ What/ of/ the/ are/ pollution?

They use ________ plastic bottles to keep water.

Choose the letter A, B, C or D to complete the passage below

Air pollution is one of _________ (6) problems of the current time all over the world. There ___________ (7) a lot of reasons for this pollution. First of all, the release of air pollutants such as smog and solid materials cause air pollution and health issues ___________ (8) human. ___________ (9) dirty wastes in big cities are polluting the whole atmospheric air. Thirdly, motor vehicles are releasing polluted gases contributing to the air pollution. Finally, some natural ________ (10) like dust, soil particles, and natural gases are also the source of air pollution.

Question 8