语法填空。
I have a good friend, 【小题1】 is really thin. Yet he wants to become a great athlete. Every week he goes to the gym, 【小题2】 he exercises and lifts weights. But it has not worked, 【小题3】 makes him unhappy. Now he is considering taking some pills, 【小题4】 he thinks will help him become stronger. I think going to the gym is a good way to keep healthy and strong. There are some pills to make us look strong. However, they have side effects, 【小题5】 will damage our health. If my friend took this kind of pill for some time, his hair might fall out or he might have health problems, some of 【小题6】 might even affect his liver or heart. Some athletes, 【小题7】 achievements were great, died very young because they took this kind of pill. I will tell my friend not to take the pills because he may have health problems in the future, 【小题8】 it is too late.