A headache is one of man's most common enemies. Most people get headaches from time to time. Probably more than 90 percent of all headaches are 76 ___by worry or tension. Modern living 77___ tensions for everybody, at work, at school and 78 ___at home. Then, what can we do about tension and worry in our life? 79 ___, find out what is causing the tension. It may result from feelings or emotions. Do you 80 ___too much over what people think of you, over your clothes, or about 81 ___you did? Second, find a way of 82 ___tension. Gardening, walking, running, swimming or any 83 ___suitable for your age will help release some tension. Then, look at your way of life. Ask yourself, where am I going? And why? Learn the 84 ___of relaxation. Lie down in a dark quiet room and relax 85 ___much as possible by taking several slow breaths. Let all your muscles relax.
81____
A. what
B. how
C. when
D. where
正确答案是A