Sentence examples for necessary to do from inspiring English sources

What's necessary to do that?

Is it really necessary to do this?

It's possible and necessary to do both".

I know what's necessary to do that".

It's not necessary to do that".

Was it necessary to do all this?

I just didn't think it was necessary to do that.

But it is not necessary to do that.

"It seemed like that wasn't always necessary to do".

I don't think it's necessary to do that".

But I thought it was necessary to do it.