Mark the letter A, B, C or D on your answer sheet to show the underlined part that needs correction in each of the following questions.
Pure sodium immediately combines with oxygen when is exposed to air.

A. immediately

B. combines

C. is exposed

D. to air

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

A mosquito (A) is filled with blood (B) is carrying (C) twice its own body (D) weight

A. is filled

B. is carrying

C. twice

D. weight

Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction in each of the following questions.

Jack is about average(A)   in his performance in comparison with (B)   other students(C)   in the(D)   class.

A. about average

B. with 

C. other students

D. the

Mark the letter A,B,C or D on your answer sheet to show the underlined part that needs correction in each of the following questions.

(A) Modern art is on (B) display at the Guggenheim Museum, (C) the building with an (D) unusually design.

A. Modern art 

B. display

C. the building

D. unusually

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

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

Hardly he had graduated from Vietnam Naval Academy when he joined Vietnam Coast Guard.

A. he had    

B. graduated from  

C. when       

D. joined

Mark the letter A, B, c or D on your answer sheet to show the underlined part that needs correction in each of the following questions.

That the subways are overcrowded in Manhattan it is a problem that should be c

A. That

B. It

C. Is

D. dealt with soon

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

Many of the population in the rural areas is composed of manual labors.

A. Many 

B. rural areas 

C. composed of 

D. labors