I ____ always been very fit and healthy, and I have ____ had a serious illness. However, a couple of weeks ____ , I caught the flu. I must admit that until then, I____ not realised just how unpleasant the flu could be. I had a high temperature for nearly a week, and my whole body hurt. I don’t think I have ____ felt so miserable. It’s taking me ages to get my strength back. It really bothers me that I haven’t had enough energy to play football ____ I got ill. In fact, I have ____ been to the doctor to ask if it’s normal to feel weak for so long. He says I’ll soon feel better. Apparently I’m lucky. For some people, especially the old and the weak, the flu can be very serious. Doctors have tried ____ years to find a cure for the flu, but they haven’t found one ____. Fortunately, researchers have developed a vaccine which gives effective protection against the disease. According to my doctor, most of his elderly patients have ____ received their flu shots.

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