This is my sister a什么that is my brother?

This is my sister a什么that is my brother? （this）is my sister My sister is a my sister is a My sister is a 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 说明为什么选This is my _____ dictionary.A sister's B sister,Mary's This is my ( )dictionary.A.sister Mary B.siter's C.sister Mary's D.sister's Mary's my sister is going to see a play this weekend.改为一般疑问句[ ] [ ] sister going to [ ] a play this weekend？ This is my sister.改为复数形式、 This is my sister(变为复数句) This is my sister.(改为一般疑问句) oh,jane,this,is,my,sister,kate. 是this is my sister kate吗 this is not my sister 缩写 This is for my sister是什么意思 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 girl is my sister 对划线部分提问：（my sister)对（my sister)提问