this is my sister还是she is my sisterHi,David,____my sister,Jane.A it‘s B this is Che is D she is

this is my sister还是she is my sisterHi,David,____my sister,Jane.A it‘s B this is Che is D she is The mirror is my sister's.对划线部分提问：my sister's是：Whose the mirror is this?还是：Whose is the mirror?还是其他? This is my ( )dictionary.A.sister MaryThis is my ( )dictionary.A.sister Mary B.sister's C.sister Mary's D.sister's Mary's This is (my sister's) sweater 对划线部分提问 this is my sister's twentieth birthday同义句 This is my sister's room改为否定句This is my sister;s room 改为否定句 This is my ( )dictionary.A.sister Mary B.siter's C.sister Mary's D.sister's Mary's 说明为什么选This is my _____ dictionary.A sister's B sister,Mary's This pink coat is my twin sister's对twin sister's提问 （this）is my sister 这个情况下用It's not 还是this is not呢?例句,NO,it's not my sister,she ‘s my friend.问下老师,想表达,这不是我的妹妹,是用this is not my sister 还是it's not my sister? This is my room,that is my sister's room 哪里错了 My mother's s.is my sister. aunt确切意思是什么this is my aunt — （ ) A . my mother‘s biother B. my mother's sister C. my sister's mother D. my mother 为什么 Whose book is this,It’s _.My parents bought it for my sister and me. Yes.look!This is my_________.She's my father's sister. This is my ( )dictionary.A.sister Mary B.siter's C.sister Mary's D.sister's Mary's顺便说下原因. This bike is mine.That one is my sister`s.Our bike are d____.