The phrase "some pledges" is grammatically correct and can be used in written English
Example: The charity organization received some pledges from generous donors to support their cause.
(Some pledges, such as cancelling outstanding student debts, remain unfulfilled).
Some pledges broke and cried, others flinched and cowered.
Well, we have actually got some pledges from David Cameron and Ed Miliband and Nick Clegg.
But some pledges may be impossible to deliver.Her first challenge is to keep the orange coalition together.
While some pledges, like marriage vows, may always carry weight, strict antitax pledges may be losing some of their sheen.
She had some pledges, including $75,000 from the producer Michael David; her son and Mr. Davis were willing to put in money; and Barbara Foy, whose company was handling the aerial feats, had donated money and in-kind work.
(Some pledge long-term benefits as well).
The audience bring cameras to record proceedings and some pledge allegiance with a succession of bizarre hats.
Some of the uncommitted delegates & some pledged to candidates no longer seriously in contention share his general outlook & would at some point join his cause.
Some pledge to be transparent about their actions Twitter, like Google, releases six-monthly reports of government requests to block information.
Luckily for some, pledging a fraternity or sorority can ease that transition.
