who is singing over there?———— （ ）is my sister

who is singing over there?———— （ ）is my sister —Who’s singing over there — ________ is Sandy’s sister. 1.Who’s singing over there — ________ is Sandy’s sister. 7.Who’s singing over there — ________ is Sandy’s sister. — Who is the lady in red over there? A girl over there is my sister 1.Who _____ over there now?A.singing B.are sing C.is singing The girl which is singing is my sister 与The girl　who is sing who is the boy over there?【】is my brother. 1.—what is happening over there 单项选择：Who ________ over there now A.are singing B.sings C.is who is that over there