＿my sister's（填介词 ）

＿my sister's（填介词 ） She is a friend ( )my sister's.填介词 填介词 1.What's wrong ( )you?2.My sister often worke late( )nig 填介词___the sky look___picture it's very beautiful 3 my sister my sister always takes the train ______home填什么介词 My birthday's__the eleventh__and my brother's is__June.填介词 This is my a（ ）,Mary.She's my mother's sister.括号里面要填什么?急要! who is the ( ) girl?She's ( )my sister.填冠词 She's my sister,对sister提问（）（） My sister is talking _____ her cell phone. 填哪个介词?理由? 填介词或副词.1.The girl( )a white skirt is my sister.2.Class is ( 填介词,-What ___ this ring?Is it yours,too?-No,it is my sister'