The big apple Moments: Use apostrophes for plurals of abbreviations which have money letters and intervals: M.D.’s, C.P.A.’s. Also use apostrophes for plurals formed from single letters: He received A’s and B’s on his report card. Mind your p’s and q’s. It's exciting that guides by exactly the same publisher, https://rotatesites.com/story21399849/a-secret-weapon-for-used-cars-uk