Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction in each of the following questions.
Humans  have done great advances in technology at the expense of the environment.

A.have done

B. at the expense

C. advances

D. humans

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

Trung wishes that he can have a chance to visit Singapore

A. that 

B. can

C. a chance 

D. visit

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 show the underlined part that needs correction in each of the following questions

Hardly had we arrived at the hotel, that there was a power cut

A. had we 

B. at 

C. that 

D. a

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

They were all (A) looking forward to spend (B) their holiday at (C) the seaside the following year.(D)

A. They were all 

B. to spend 

C. at

D. the following year

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

The Concord can fly across(A) the Atlantic without (B) refueling (C) and carrying(D) 11 tons of freight.

A. across

B. without

C. refueling

D. carrying

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

A beaver uses its strong front teeth to cut down trees and peel off its bark

A. its 

B. front teeth

C. peel off

D. its