beenThird conditional: "Had stricter measures _____ enforced, the environmental damage could have stayed minimal."Had stricter measures been enforced, the environmental damage could have stayed minimal.NoteHad stricter measures been enforced, the environmental damage could have stayed minimal.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