This is tom'S friend in america.改为复数形式 This is mary's father

This is tom'S friend in america.改为复数形式 This is mary's father Is this Mary's father 改为否定回答 This is my friend 改为复数形式 Is this your friend?改为复数形式 This is Tom's parent. （改为复数句） 改为复数形式 Is that an English book?What"s this in English?It is what is this ?lt’s a sheep 改为复数形式 复数形式转换Is she his friend.Yes,it is.This is a ( ) ( ) Susan`s This is Tom`s card 【改为同一句】 This【 】is【 】 形式 急 Tom's father's sister is this a_______ This is her friend改为复数句 That"s his brother改为一般疑问句 he is Tom and Mike's father.改为复数句子