That is because the need never occurred before.

No need to speak of what occurred between us.

Unfortunately, Washington antics are standing in the way of achieving what virtually everyone says needs to occur.

The crisis eased before the need for British involvement occurred.

The likelihood is that he'll find them one by one as the need occurs.

This need for foreign affirmation occurs all too often here, the young director laments.

"I will let you know, if such need occurs."

"No need to be-ninety percent of all accidents occur in the home," he observed, smiling down at her.

The second need for aggression occurs after the first clutch of eggs have been laid.

We better keep an eye on this and see if we can balance things should the need occur.