Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
Constant correction of speaking ‘errors’ by a teacher is often counter-productive, as student may become afraid to speak at all.
A. desolate
B. fruitless
C. barren
D. effective
Đáp án D.