Period 3 Grammer Focus-3c,Unit 2 This is my sister,Grammar Focus 语法焦点,3a Complete the conversation and practice it with your partner,A: That _ my family. Thats my mother. B: _ he? A: _ my father. B: Whos _? A: Shes _ sister. B: And _ they? A: _ my grandparents,is,Whos,Hes,she,my,whore,Theyre,3b Look at the picture. Make sentences with the words in the three boxes,this that these those,my your,father mother grandfather grandmothe