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. 

Genes have several alternative form, or alleles, which are produced by mutations.

A. several alternative

B. form

C. which

D. produced by

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 letters written(A) by the man was translating (B)into(C) Vietnamese by my sister. (D)

A. written

B. was translatin

C. into

D. by my sister

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 man that you are looking for living next door.

A. The

B. that

C. are

D. living

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.

There have been a report of several bombings by terrorist group.

A. have been

B. several

C. bombings

D. terrorist

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.

There have been a report of several bombings by terrorist group.

A. have been

B. several

C. bombings

D. terrorist

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 that age of computers, it is difficult to imagine how tedious work of accountants and clerks must have been in the past

A. that age 

B. it is 

C. work 

D. have been

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 that age of computers, it is difficult to imagine how tedious work of accountants and clerks must have been in the past.

A. that age

B. it is

C. work

D. have been