Câu hỏi: 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 6

A. serious     

B. more serious     

C. the most serious      

D. serious than

Câu 1:

Do you know what ___________ water pollution?

A. caused      

B. causing      

C. to cause      

D. causes

Câu 2: Choose the letter A, B, C or D the word that has the underlined part different from others.

A. A. effect      

B. pollution      

C. invite      

D. charity

Câu 3: Choose the letter A, B, C or D the word that has the underlined part different from others.

A. A. reuse      

B. refill      

C. recycle     

D. level

Câu 4: Choose the letter A, B, C or D the word that has the underlined part different from others.

A. energy      

B. president      

C. electricity     

D. decorate

Câu 5: Choose the letter A, B, C or D the word that has the underlined part different from others.

A. A. fasten      

B. daddy     

C. backpack     

D. water

Câu 6: Choose the letter A, B, C or D the word that has the underlined part different from others.

A. A. noise     

B. reuse    

C. house     

D. because