Is she your grandma对不对

Is she your grandma对不对 Is she your grandma?为什么用she? Is your grandma how is your grandma? ( )your grandma ( ) a computer?yes,she ( ) She is her grandma.(对her grandma提问) She is my grandma.画线部分 my grandma. letter is this grandma from your a ) there is a letter to your grandma is your grandma chinese?什么意思? Which is your grandma 的正确形式 Your grandma is old .Please _____her.