Вставить past simple/present !

D Complete the passage with suitable words.

I 1 have always been very fit and healthy, and I have 2 never had a serious ilness. However, a couple of weeks 3 ago I caught the flu. I must admit that until then, I 4 had  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 5 ever 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 6 again. I got ill. In fact, I have 7 already been to the doctor to ask it it's normal to feel weak 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 8 for years to find a cure for the flu, but they haven't found one 9 yet. Fortunately, researchers have developed a vaccine which gives effective protection against the disease. According to my doctor, most of his elderly patients have 10 already recieved their flu shots.