I want to say this in a passive voice: People must have had this problem in the past. The sentence starts with something like "This problem must ...". How do I say it?
Uncle Vernon made another funny noise, like a mouse being trodden on. —Harry Potter and the Sorcerer’s Stone Is ‘being’ a passive auxiliary verb or a progressive one?
… But their main business is in parts and refurbishing, and the old man, Deforges, doesn’t like to sell a used piano to someone who hasn’t come recommended. He says it’s more trouble than it’s ...