1/ The James`s father
2/ The grandchildren`s books
3/ The sister-in-law`s name
4/ The Helen and Peter`s surname
5/ The John`s parents
6/ The this boy`s brother
7/ The This women`s children
8/ The twins`s toys
9/ The Glinka andChaikovsky`s music
10/ The these men`s profession
11/ The my step-father`s birthday
12/ She is staing with her`s aunt.