题目内容：

课文填空，每空填写一词或多词。

I was weak after a long illness, so I wanted to 1. ! Then a friend suggested, "Why don't we 2. before school?" So we started running a week ago. But I do not enjoy running, and when I get to school, I feel awful. My legs hurt and I am hot all over. Perhaps I am 3. do any exercise. What do you think?