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.

In studies conducted on gazing behaviour, it has been founded that listeners gaze at speakers more than speakers gaze at listeners.

A. In studies

B. conducted on

C. has been founded

D. more than

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.

In studies conducted on gazing behaviour, it has been founded that listeners gaze at speakers more than speakers gaze at listeners.

A. In studies        

B. conducted on   

C. has been founded 

D. more than

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.

We have conducted (A) exhausting research (B)into the effects of smartphones on students’ (C) behaviour and their (D) academic performance.

A. exhausting  

B. into  

C. behaviour  

D. academic performance

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.

It (A) has been said (B) that laser (C) to be the most miraculous (D) to cure the disease.

A. has been said 

B. that 

C. to be

D. to cure

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.
It was suggested that he studies the material more thoroughly before attempting to pass the exam.

A. was suggested

B. studies

C. more thoroughly

D. attempting

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.

It was suggested that Pedro studies the material more thoroughly before attempting to pass the exam

A. studies

B. more

C. attempting

D. to pass

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.

Only after food has been dried or canned that it should be stored for later consumption

A. for 

B. that it should be stored 

C. has been dried 

D. after 

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.

It was suggested that Pedro studies (A) the material more (B) thoroughly before attempting (C) to pass (D) the exam.

A. studies 

B. more 

C. attempting 

D. to pass