She left her office number and asked for a return call on a matter of great importance.

The final line must be one of great importance to the whole.

Of greater importance, John says, he is happy with life as a man.

But to be able to talk with them, to know about their ways, is something of great importance.

But he had learned two things of far greater importance.

What I have to tell you is of great importance.

An hour passed, during which nothing of any great importance happened.

The 1980s were of great importance for international trade as well.

I do indeed have something of great importance to tell you.

I consider these three points to be of great importance.