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.

Vaccines are one of the most important measures of prevention medicine to protect the population from diseases and infections.

A. are

B. measures

C. prevention

D. infections

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

One of the most important measures to be taken to promote the develop of a country is to constantly carry out economic reforms

A. measures

B. develop

C. constantly

D. carry out

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.

One of the features of London is the number of big stores, most of them are to be found in or near the West End.

A.One of the features 

B.number

C.most of them

D.to be found

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.

One of the features of London is the number of big stores, most of them are to be found in or near the West End.

A. One of the features     

B. number    

C. most of them     

D. to be found

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.

One of the features of London is the number of big stores, most of them are to be found in or near the West End

A. One of the features 

B. number 

C. most of them 

D. to be found 

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.

One of the features of London is the number of big stores, most of them are to be found in or near the West End

A. One of the features

B. number

C. most of them

D. to be found

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.

One of the features (A) of London is the number (B) of big stores, most of them (C) are to be found (D) in or near the West End.

A. One of the features

B. number 

C. most of them

D. are to be found 

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

Bowling, one of the most popular indoor sports, are popular all over the United States and in other countries.

A. of the

B. indoor

C. are

D. other