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.

The economy of Maine is based to a great extent in its forest, which over 80 percent of its surface area.

A. economy of

B. to a

C. in its

D. percent of

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.

The (A) economy of this country is based (B) to a great extent (C) in its forests, which cover 80 (D) percent of its surface area.

A. economy 

B. to 

C. in its 

D. percent of

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 indicate the underlined part that needs correction in each of the following questions.

Chemical engineering is based on the principles of physics, chemists, and mathematics.

A. on

B. principles

C. chemists

D. mathematics

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.

Chemical engineering is based on (A) the principles (B) of physics, chemists (C), and mathematics (D).

A. on

B. principles

C. chemists

D. mathematics

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

The Earth is the only planet with a large number of oxygen in its atmosphere.

A. the

B. a large number

C. oxygen

D. its

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. 

Great apes are in crisis of becoming extinct

A. Great 

B. are 

C. crisis 

D. extinct 

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

The earth is (A) the only planet with a large (B) number of (C) oxygen in (D) its atmosphere.

A. the

B. number

C. oxygen

D. its