Sentence examples for he be certain from inspiring English sources

How could he be certain?

How can he be certain?

Can he be certain, then, that the tissue came from a coelacanth?

Nor could he be certain that SNB officers were not present at the university.

But if there were no precise records, how could he be certain that nothing had been stolen?

One of the lessons it teaches, he argues, is that "Scrooge can't redo his past, nor can he be certain of the future.

He was certain he was being pursued.

Of this, he is certain.

Of that he was certain.

He was certain this was his son.

He is certain to have taken note.