Everyone gets headaches sometimes. But how 1 do you know about headaches? What may cause(引起) 2 ? And what should we do if we have a headache? 3 should we go to see a doctor? A headache is not a disease(疾病), but it may show that 4 in our body is wrong. We may have 5 than one headache each month. Usually a fever or some other 6 may cause headaches. We may get a headache when we work too hard. We may get a headache when we don't get enough 7 . We may get a headache when we exercise on an empty stomach. What should we do if we have a headache? We should lie down and rest. We should have a 8 sleep. We shouldn't take too much exercise if we are 9 . If we have headaches 10 . we need to see a doctor