The phrase "a range of promises" is correct and usable in written English.
It can be used when discussing various commitments or assurances made by an individual or organization.
Example: "The company made a range of promises to improve customer service and enhance product quality."
Alternatives: "a variety of commitments" or "a spectrum of assurances."
In 1979, when the Islamists overtook the popular revolution and established an irreversible Islamic Republic, they made all range of promises - women's rights, freedom of religion, freedom of the press, open government, freedom, freedom, freedom.
A range of interventions demonstrate promise for achieving meaningful improvements in stigma related to substance use disorders.
In PromiseUP's beta testing, the range of promises made include a son promising to call his mother once a day for a month, a wannabe athlete promising themselves that they'll run 3 miles a day every day for a week, and a user promising to eat lunch using only their feet.
Nor is the danger secrecy, which, as Posner notes, "is ubiquitous in a range of uncontroversial settings," a promise the government makes to protect "taxpayers, inventors, whistle-blowers, informers, hospital patients, foreign diplomats, entrepreneurs, contractors, data suppliers and many others".
Polyphenolic compounds, such as curcuminoids, have demonstrated a range of protective and therapeutic promise.
A range of program interventions show promise for helping people build and improve non-academic and vocational skills.
While the basic experimental procedure for laboratory adaptive evolution has remained broadly similar for many years, a range of recent advances show promise for improving the experimental workflows for evolutionary engineering by accelerating the pace of evolution, simplifying the analysis of evolved mutants, and providing new ways of linking desirable phenotypes to selectable characteristics.
The service is unique to the property, and invites guests to explore a range of Mayan soaps that promise to cleanse, invigorate, moisturize and exfoliate.
In 2013, he partnered with Shaun Neff's action sports clothing line Neff for a range of t-shirts and promised a Dim Mak denim line in the future.
He promises a range of tax credits — $4,000 a year for college tuition, up to $3,000 for child care, $7,000 for a clean car, a mortgage tax credit.
