Almost everyone knows the meanings of Mr, Mrs and Miss. Mr is used before the names of men. Mrs is used for married women and Miss is for unmarried woman. But ___21___ is Ms? For some time, businessmen in the United States have used Ms before a woman's name when they do not know whether the woman is married or not. Today, however, many women like Ms better than Mrs or Miss. The word “___22___” does not tell us whether or not a man is married. So the women want to be equal to men in this way. These women feel that it is not important for people to know whether they are married or not. There are some problems with Ms. Not all the women like it. Some like the older ways of doing things. Some find ___23___ difficult to read. Ms ___24___[miz]. Young women like it better than older women ___25___. It is difficult to know whether most American women will use Ms in the future. What do you think of it? 21)、 A.Mr B.it C.sounds like D.do E.what 22)、 A.Mr B.it C.sounds like D.do E.what 23)、 A.Mr B.it C.sounds like D.do E.what 24)、 A.Mr B.it C.sounds like D.do E.what 25)、 A.Mr B.it C.sounds like D.do E.what