-Whose room is this -It's the twins'.为什么要用the twins'?

“Whose room is this? Whose book is this? Whose ruler is this? whose is this book? Whose hat is this? -Whose room is this -It's the twins'.为什么要用the twins'? this is (their) room.用whose对括号部分进行提问 room,that,whose,is ) 连词组句 将下列句子排列成有意义的话 ti's Is nice?Yes,he hasanice room .Whose bebroom is this,Ann? whose spanner is this 翻译 whose sweater is this是什么意思 Whose game is this?中文 whose money is (this,these)? Whose is this book ?对吗? whose home is this翻译 this,whose,toy,is,bear(?) whose home is this?翻译 Whose computer is this.[同义]