thatCleft sentence: "It was a lack of investment _____ ultimately led to the collapse of the programme."It was a lack of investment that ultimately led to the collapse of the programme.NoteIt was a lack of investment that ultimately led to the collapse of the programme.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