Peter and Helen's party?这样表述对吗?还是应该Peter's and Helen's?

Peter and Helen's party?这样表述对吗?还是应该Peter's and Helen's? 如图：1、John and Helen are Jack's(……的）( ).2、Peter is Tom's( ).3、David is Jack's( ).4、Peter is David's( ).5、Mary is Peter's( ）. Peter:Who's the woman___________white,Helen?Helen:____________my motherPeter:____________your mother a doctor?Helen:Yes._________about your mother?Peter:________________mother's a shop assistant. This bedroom is .A.Peter's and Joe'sB.Peter and joe'sC.Peter's and JoeD.Peter and Joe ---------farthers made them have piano lessons.A.Peter and Ann's B.Peter's and Ann's C.Peter's and Ann D.Peter and Ann 是Peter‘s and Trancy’s还是Peter and Trancy’s 【】school is very beautiful A.ton and peter b.ton’s and peter C.tom and peter’s D.peters 是Tom's and Peter's bikes还是Tom and Peter've bike Tom's Helen's brother.Helen is Tom's sister.（合成一句话）合成如下句型Tom and Helen ____ ____ and ____ . My father's n____is Bill and my mother is Helen. Jeff and Helen are Jim,s p .Jim isJeff and Helen are Jim,s p .Jim istheir son 改错Peter's pen and Millie's pen are like. Oh,these presents are so nice.-----The CD is from Betty and the books are from ___的答案和讲解A I and Helen B Helen and me C Helen's and mine D Helen and I -----mothers both work in the same hospital.A Tim and Peter'sB Tim's and PeterC Tim's and Peter'D Tim and Peter 【】 mothers both work in the same hospital.A.Tim and Peter’s B.Tim ’s and Peter C.Tim ’s and Peter ’s D.Tim and Peter括号填什么 为什么翻译 Peter came in and w____something in Daddys ear peter's father and mother ( ) teacters is am are be Hill's and Helen's room和Hill and Helen's room有什么区别