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) average salt (B) content of seawater is (C) more than three (D) percents.

A. average 

B. content 

C. more than 

D. percent

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 world is becoming more (A) industrialized and the number of animal (B) species that have becoming (C) extinct (D) have increased. Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

A.  industrialized

B. species

C. extinct

D. have

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

The Mediterrannean, a large sea surrounded by land, (A) is a mile deep (B) on average (C) and more than 2000 miles length.(D)

A. surrounded by land

B. mile deep

C. on average

D. 2000 miles length

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.

More and 90 percent of the calcium in the human body is in the skeleton.

A. the

B. human

C. is

D. and

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

More and 90 percent of the calcium in the human body is in the skeleton.

A. the

B. human

C. is

D. and

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.

Ninety-seven percent of the world’s water are salt water found in the oceans.

A. percent

B. world’s

C. are

D. found