hadThird conditional: "If renewable energy _____ been prioritised earlier, carbon emissions would be far lower today."If renewable energy had been prioritised earlier, carbon emissions would be far lower today.NoteIf renewable energy had been prioritised earlier, carbon emissions would be far lower today.Elon.io is an online learning platformWe have an entire course teaching IELTS Vocabulary — Band 7+ grammar and vocabulary.Start learning IELTS Vocabulary — Band 7+ now