Mark the letter A, B, C or D on your answer sheet to indicate the correct answer that is opposite in meaning to the underlined part in each of the following questions.
Trả lời câu hỏi dưới đây:
A chronic lack of sleep may make us irritable and reduces our motivation to work.
irritable = cáu kỉnh, khó chịu
A. không thoải mái
B. đáp ứng
C. bình tĩnh
D. khốn khổ