My OElderly Father My Elderly Father

"Old" is often used as a term of endearment, instead of speaking about age. Here, I would use "elderly" since it is always about age, and it is also respectful whereas "old" can be taken negatively

My father is near complealmost seventy years old. My father is almost seventy years old.

My father is near completly seventy years old. My father is nearly seventy years old.

"Complete" would add nothing here

He has a nicelives a good old age because praticehe always exercises and eat very nices well. He lives a good old age because he always exercises and eats well.

He has reached a nice old age because pratiche exercises regularly and eats very nicewell. He has reached a nice old age because he exercises regularly and eats very well.

We often use "reach" instead of "have" when speaking about the age of a person

He notever stops being a good exeample for me. He never stops being a good example for me.

He has not stopped to be a good exeample for me. He has not stopped to be a good example for me.