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 basic elements of public-opinion research are interviewers, questionnaires, tabulating equipment, and to sample population. 

A. basic elements    

B. are

C. tabulating

D. and to sample 

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 basic elements of public-opinion research are interviewers, questionnaires, tabulating equipment, and to sample population.

A. basic elements

B. are

C. tabulating

D. and to sample

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 basic elements of public-opinion research are interviewers, questionnaires, tabulating equipment, and to sample population.

A. basic elements

B. are

C. tabulating

D. and to sample

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 basic elements of public-opinion research are interviewers, questionnaires, tabulating equipment, and to sample population

A. basic elements 

B. are 

C. tabulating 

D. and to sample

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 basic elements(A) of public-opinion research are(B) interviewers, questionnaires, tabulating (C)equipment, and to sample (D) population.

A. basic elements

B. are

C. tabulating

D.to sample

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) basic elements of public-opinion research (B) are interviewers, questionnaires, (C) tabulating equipment, and (D) to sample population.

A. basic elements

B. are

C. tabulating

D. to sample

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

The basic elements of public-opinion research are interviewers, questionnaires, tabulating equipment, and to sample population.

A. basic elements  

B. are 

C. tabulating          

D. to sample

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.

Each of the chemical elements have its own standard symbol.

A. of the

B. chemical

C. have

D. its own