However, his predictions have also proved to be wrong on certain occasions.

On certain occasions, they actually used these techniques during work with their female clients.

On certain occasions, he sports a top hat and a cane.

"Such things should only be played on certain important occasions."

The grounds are open to the public on certain occasions.

He thus used both, using one or the other on certain occasions.

Mass is still held at the altar on certain occasions.

"Well, I suppose you do sometimes rise to certain occasions."

Something that you, perhaps kept in a box, almost, and brought out on certain occasions.

She knows the value of being direct on certain occasions.