21. All forms of discrimination against all women and girls ____ immediately everywhere. A. must be taken away B. must be ended C. must be allowed D. must be followed 22. A common reason that someone ____ more for similar work is because of his or her experience or "length of service”. A. may be paid B. should not be paid C. can be paid D. must be paid 23. Gender equality ____ only when women and men enjoy the same opportunities. A. will achieve B. achieves C. achieve D. will be achieved