Ответье на вопросы, например: Whose dog is this ?(Ann)- This is Ann's dog. :
A) Whose book is this ?(My son)
B) Whose cat is this ?(The Browns)
C) Whose toy is this (Children)
D) Whose pencils are these?(My students)
E) Whose jacket is this ( My sister)

a) This my son's bookb) This is the Browns' catc) This the children's toyd) These are my students' pencilse) This my sister's jacket