单项选择Mr Black_____________ father.They are twin sisters.A.Su

单项选择Mr Black_____________ father.They are twin sisters.A.Su 单项选择 Mr black is（ ）fathe.They are twin sisters. 单项选择Susan and Sue are( ) A.twin sister B.twins sisters C.twi they are ________ (twin) sisters. Su Hai and Su Yang are twin sisters,_father is a doctor. They are ____ .A twin B twin brothers C twin sisters D twins They are twin sisters.(改一般疑问句) Su Hai and Su Yang are twin sisters.（写同义句) Su Yang and Su Yang are twin sisters.(同义句） su hai and su yang are ___(twin)。they are ____(twin)sister Sui Hai and Su Yang are twin sisters.Thay are in the same cl 单项选择1.what are they doing?---they-----------a story