"So now you are going to tell me about those certain reasons."

"There are certain reasons why I do not want my identity known to any but yourself."

"Men have gone off on more foolish journeys for less certain reasons."

All these things he did, not only to please Wi, but for a certain reason of his own.

For certain reasons you will next go and do homage at this well.

If one village went native for a certain reason, so would all the rest.

I began to remember that there were certain good reasons why I should be dead.

He knew by experience that there were certain other reasons.

There were certain reasons for this as the roll call vote had been forgotten.

For certain reasons I want to prove my case first.