feel certain

Not a couple of hundred feet away, I felt pretty certain.

I feel certain they'll understand and give of their very best.

Time was, she felt certain, running out for her friend.

And I feel certain the end result would not look very human.

But you are in good hands now, I feel certain.

The boy felt certain this was the reason for the question.

But if anyone can get it done, I feel certain you're the one.

And she felt certain that business would only continue to increase in the days ahead.

At the time he'd felt certain he could learn something.

One way or another, she felt certain that it would.