Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Air pollution is getting __________ serious in big cities in the world.

A. more and more

B. most and most

C. the more and the more

D. the most and the most

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Question 16: Air pollution is getting _______ serious in big cities in the world.

A. more and more

B. the more and the more

C. the most and the most

D. most and most

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

In many big cities, people have to ______ up with noise, overcrowding and bad air.

A. keep

B. catch

C. face

D. put

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following question

Houses in big cities are expensive because land is in__________supply

A. brief 

B. slight 

C. little 

D. short

Mark the letter A, B, C or D on your answer sheet to indicate the underlinedpart that needs correction in each of the following questions from 21 to 23.

Air pollution, together with littering, have been causing many problems in our large, industrial cities in the last few years

A. with

B. in our large

C. many

D. have been

Mark the letter A, B, C or D on your answer sheet to indicate the underlinedpart that needs correction in each of the following questions from 21 to 23.

Air pollution, together with littering, have been causing many problems in our large, industrial cities in the last few years.

A. with

B. in our large

C. many

D. have been

Mark the letter A, B, C or D on your answer sheet to indicate the underlinedpart that needs correction in each of the following questions

Air pollution, together (A) with littering, (B) have been causing (C) many problems (D) in our large, industrial cities in the last few years.

A. with

B. have been 

C. many 

D. in our large