After four weeks, the main question now being asked is how we are going to sustain interest in the story.

"What sustains interest in the long run is political power."

People have a limited capacity to sustain interest in politics.

The problem is, if no one gets to see these women compete, you can't sustain interest in them as athletes.

Without a strong beginning, a student's chances for sustaining interest in this field are very small indeed.

Dealers are already concerned about how to sustain interest in the product.

That, of course, could conceivably sustain my interest in your little world for some time to come.

But there was enough choreography of quality to sustain interest.

But is the speech hard to sustain interest in as an active listener?

But some critics wonder whether he can sustain his interest in a domestic agenda.