他爸爸的身体这么好,是因为他每天做运动的习惯.英文这么翻译?是这样， His father is very healthy because he ____ _______ ________ _____ ________

It is the good habit of doing exercise every day that makes his father so healthy.

强调句句式，强调原因:
It's doing exercise every day that makes his father so healthy.
It's because of doing exercise every day that his father is so healthy.
一般句式的话，
His father is so healthy ，for/because he has the habit of doing exercise every day.
His father is so healthy as a result of keeping doing exercise everyday。
His father is very healthy because he 【is accustomed to exercising daily】
His father is very healthy because he 【is accustomed to everyday exercising】

because of his habbit of doing exercise every day, his father is so healthy.

his father is so healthy because he keeps doing exercise every day。

His father's body so well,because his daily habit of exercise