The lack of reaction from the streets proved that the revolution was, indeed, over.

But our lack of knowledge does not prove something evil.

The lack of evidence for a crime doesn't prove it was an accident.

And the lack of the eight proved to be significant.

Her lack of English at the time proved to be no barrier to romance.

But that lack of directing experience did not prove an obstacle.

However lack of songs proved to be the major problem.

The lack of material and human resources proved to be a formidable problem.

Such a lack of urgency could prove costly to America's future security.

However, his lack of faith in her proves an obstacle.