Mark the letter A, B, C or D on your answer sheet to indicate the word or phrase that is OPPOSITE in meaning to the underlined part in each of the following questions.
Câu 1: Mail shots have proved to be the most cost-effective method of marketing our products.
         
         A. cheap            
         
         B. inefficient
         
         C. encouraging
         
         D. discouraging
Câu 2: She now faces the daunting challenge of writing a successful sequel to her hugely popular first book.
         
         A. formidable            
         
         B. feasible
         
         C. encouraging
         
         D. discouraging
A.
B.
C.
D.