помогите сделать дом. задание по английскому  
form the words as in the example,
Example the text jf the pupil--the pupil s textbooks
1) the letter of her friend--...
2) the nickname of my sister--...
3) the photos of the teachers--...
4) the sharpener of his brother--...
5) the felt-tip pens of their sons--... 
6) the cartridges of the children--...
7) the computer of myparents--...