vì 3<4 nên 4-n mới =3

và n=1

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

The company allows some customers to buy goods on_________and pay for them later.

A. card

B. cheque

C. credit

D. cash

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

A. terrified

B. influenced 

C. averaged

D. accompanied

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.

Drug addiction(A) has resulted(B) of many (C)destroyed careers and (D)expulsions from school or college

A. has

B. of

C. destroyed

D. expulsions

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

“Why don't you complain to the company, John?” said Peter.   

A. Peter suggested that John should complain to the company. 

B. Peter advised John complaining to the company. 

C. Peter threatened John to complain to the company. 

D. Peter asked John why he doesn't complain to the company.