Sentence examples for had proven from inspiring English sources

No other drug had proven as effective.

In that, at least, it had proven effective.

He, of course, had proven that months ago.

The recruits, many of them teenagers, had proven disastrously undisciplined.

Other communist-era relics had proven less robust.

He clearly thought that the P.K.K. had proven itself.

Anyway, he had proven a much more suitable Captain Clean.

Athens was a walled city which had proven itself capable of defending those walls.

And they had to change bureaucratic procedures that had proven ineffective.

But at the end of 2014, the US had proven reserves of just under 40bn barrels, while Saudi Arabia alone had proven reserves of 268bn barrels.

Last fall, she had proven herself capable of beating Kwan when she won Skate Canada.