Sentence examples for that I do from inspiring English sources

"You like that?" "I do, very much.

You may not like that; I do.

Having said that, I do feel deracinated.

"You know a place like that?" "I do," Andreas said.

That, I do not miss.

But other than that, I do not feel sick.

That I do know.

Except that I do.

That I do remember clearly.

That I do not know.

(I know that I do).