Sentence examples for how effective it from inspiring English sources

How effective it is, though, is unclear.

"I don't know how effective it is.

History shows how effective it is.

We didn't realize how effective it was going to be.

"The question is how effective it will be".

That speaks volumes for just how effective it is".

But how effective it will be is an open question.

But a study shows just how effective it has been.

I don't know how effective it has been.

"The question is how effective it can be in the long run.

Even Hope Now says it is unsure how effective it is.