Sentence examples for theory has been from inspiring English sources

"Their theory has been tested.

That theory has been thoroughly discredited.

But this theory has been widely criticized.

To date no theory has been abandoned.

The "collusion theory has been debunked," McDaniel insisted.

This iconoclastic theory has been gaining ground among historians.

His political theory has been quite exact and entirely consistent.

Much of this "conveyor belt" theory has been confirmed.

The alternative diphyletic theory has been proposed by many zoologists.

But Goodfellow's theory has been disputed.

And such a theory has been defended.