Use the possessive case in the following. 1) the father of james. 2) the books of his grandcildren. 3) the name of her sister-in-law. 4) the surname of halen and peter. 5) the parents of john. 6) the brother of this boy. 7) the children of these women. 8) the toys of the twins. 9) the music of glinka and chaikovsky. 10) the profession of these men. 11) the birthday of my step-father. 12) she is staying with her aunt.

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.