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.

What we know about certain diseases are still not sufficient to prevent them from spreading easily among the population

A. What we know about

B. are

C. from spreading

D. among

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.

What we know about (A) certain diseases are (B) still not sufficient to prevent them from spreading (C) easily among (D) the population.

A. What we know 

B. are 

C. from spreading

D. among 

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.

What we know about (A) certain diseases are (B) still not sufficient to prevent them from spreading (C) easily among (D) the population.

A. what we know about

B. are

C. from spreading

D. among

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

(A) What we know about certain diseases (B) are still not sufficient to prevent them (C) from spreading easily (D) among the population

A. What we know about

B. are

C. from

D. among

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

What we know about certain diseases are still not sufficient to prevent them from spreading easily among the population.

A. What we know about

B. are

C. from spreading            

D. among

Mark the letter A, B, C,or D on your answer sheet to show the underlined part that needs correction.
What we know about certain diseases are still not sufficient to prevent them from spreading easily among the population.

A.What we know about

B.are

C.from spreading

D.among

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.

Despite modern medical technology, many diseases causing by viruses I are still not curable.

A. Despite

B. many

C. causing

D. curable

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.

Question 6: Despite modern medical technology, many diseases causing by viruses I are still not curable.

A. Despite

B. many

C. causing

D. curable