填介词___the sky look___picture it's very beautiful 3 my sister

填介词___the sky look___picture it's very beautiful 3 my sister ＿my sister's（填介词 ） My sister is very beautiful. She is a friend ( )my sister's.填介词 It's very kind -----you -----bring my book.空格里面该填什么介词 My sister l____ very beautiful today Don't play ( )fire! it's very dangermus?填介词 The skirt is my sister's.The skirt is very beautiful.(改成定语从句 填介词,-What ___ this ring?Is it yours,too?-No,it is my sister' ( )English,it's my favorite subject.填介词 It’s a photo?my family.问号填什么介词? 填介词：1.It is rainy today .My sister is unhappy.I sing a song(