1 I was on time for my class,but Lisa was late for hers2 They have their methods of travel and we have ours.3 We prefer our methods and they prefer theirs4 I found my books ,but Peter couldn't find his5 I left my pencil sharpener at home.May i borrow yours?6 She plays with her kite and he plays with his7 I use my calculator and she uses hers8 Peter walks his dog and we walk ours9 I deliver the mail.it's my job,not yours10 You found my pencil but Susan couldn't find hers11 I swim in my swimming pool and they swim in theirs12 Ted enjoys his work and we enjoy ours 13 Each student in the school has his own desk and his own locker14 I read my books and my sister reads hers15 She didn't bring her umbrella but i bought mine.