bill's and sam's projects ____ about yogurt A.are both B both are Cboth be D be both

bill's and sam's project ____about yogurt写错了bill's and sam's projects ____about yogurt。用are both 还是both are bill's and sam's projects ____about yogurt.用are both 还是both are Tom's hair is shorter than------ A.Sam and Bill B.Sam and Bill's C.Sam and bill D.Sam's and Bill's 我认为应该选B,比较级是两者之间的.如果选D应该用最高级啊!可是老师说选D bill's and sam's projects ____ about yogurt A.are both B both are Cboth be D be both he's sam and amy's friend. 是Tom’s and Sam’s room 还是Tom and Sam’s room? This is ________ car.It looks very beautiful.A.Kitty’s and Sam B.Kitty and Sam’s C.Kitty’s and Sam’s D.Kitty and Sam —mother is a teacher A,Tom and Bill B,Tom's and Bill C,Tom and Bill's D、Tom＇s and Bill ＇s —mother is a teacher A,Tom and Bill B,Tom's and Bill C,Tom and Bill's D、Tom＇s and Bill ＇s These are _____________ bikes. A. Jim's and Sam's B. Jim's and Sam C. Jim and Sam's说明,谢谢 THE desk belongs to A：Bill and Mike‘s B：Bill’s and Mike 's C:Billand MiKE D:Bill‘s and MIKe sam's night 中文翻译! John is Sam and Amy's friend.是否有语法错误? Who is the woman under the tree near the house?She is _________ aunt.A.Sam and Tim B.Sam and Tim's C.Sam's and Tim's D.Sam's and Tim what's really interesting about Sam and his sister yesterday l went to ten park with sam and amy we.met johe park .he's sam and amy's He has shorter hair than Sam .And he's calmer than Sam.是什么意思 He has shorter hair than Sam.And he's calmer than Sam .