【正确答案】 In order to keep healthy, he has got into the habit of doing morning exercise.

【答案解析】 “为了”可译为in order to；“保持健康”可译为keep healthy/fit；“养成了……的习惯”可译为get into the habit of doing sth.；“晨练”可译为morning exercise。另外，翻译时还应注意采用正确的时态。