阅读下面对话,掌握其大意,并根据所给首字母的提示,在标有题号的右边横线上写出一个英语单词完整、正确形式，使对话通顺。
M: Jenny，you look so strong, quite d______ from what you used to be．How I envy you!
W: I think you’veh_____ the saying：“A sound mind dwells in a sound body．”I have always t____ my best to keep fit for both my study and work．
M: Right you are! Can you give me some t_____ as to how to keep fit?
W: To my m______, the best way to keep fit is to go in for sports．
M: What kind of sports do you participate in?
W: I go swimming o_____ a week．I do this even in cold winter．
M: I used to swim in high school，but don’t have t_____ anymore．
W: That’s too bad．Exercise is really i_________ for your health．
M: I know．I’m g______ a little fat．I am short of breath when going upstairs．
W: That’s a bad sign．I think you need more e_______．Well, I’m going swimming tonight．Do you want to go with me?
M: Okay．I really need to get in shape again．