couldHedging (past form of "can"): "It _____ be argued that economic growth should not come at the expense of the environment."It could be argued that economic growth should not come at the expense of the environment.NoteIt could be argued that economic growth should not come at the expense of the environment.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