I have a long hair ____ a ponytail.中为什么填in?

I have a long hair 可以这样讲吗? my hair _ long I have short hair,___ she has long hair. ------Mille ------(have)long hair in a pouytail. I have long hair.(对long划线部分提问) I have a long hair ____ a ponytail.A、in B、with C、of D、at AS A CLASS TEACHER I DON'T REALLY APPROVE( )A.STUDENTS TO HAVE LONG HAIR B.STUDENTS' HAVING LONG HAIR C.OF STUDENTS TO HAVE LONG HAIRD.OF STUDENTS HAVING LONG HAIR I have a long hair ____ a ponytail.中为什么填in? I have a long hair ____ a ponytail.中为什么填in? his hair is short和her hair is long变成如 I have a round face.这样的 ( )she ( )(have) long hair? They have long hair? hair grows long.I should have it_____.A.cutB.to cutC.cuttingD.cuts you dind't use to have short hair,dind't you?______ ,but now I have long hair.A.yes,I did B.No,I didn't I uesd to have long hair 同义句I uesd to have long hair=I don‘t have long hair（ ）（ ） I have long black hair.(同义句） I have long hair 同义句怎么改? i have long hair 否定句 一般疑问句