MARK THE LETTER A, B, C OR D ON YOUR ANSWER SHEET TO INDICATE THE WORD...

Câu 1: A chronic lack of sleep may make us irritable and reduces our motivation to work.A. uncomfortable B. responsive C. calm D. miserable=> KEY C: irritable = cáu kỉnh, khó chịuA. không thoải mái B. đáp ứng C. bình tĩnh D. khốn khổ