1.Look,this is 【our】 reading room.It's for 【us】students.The【teachers'】are over there near the garden.
2.A:【Your】 schoolbag is here.【Tom's】 is on the desk but where is【mine】?
B:【I】saw 【it】 beside【your】desk but【it】 is not there now.
3.【They】have a lovely little dog.【Its】name is Huahua.【They】often play with【it】at home.
4.A:Mr Green is 【our】 English teacher.【He】 is very kind and 【we】 all love 【him】.
B:Yes,and 【his】wife,Mrs Green,is a teacher,too.
A:What subject does 【she】 teach,do 【you】 know?
B:Music.And【we】like 【her】 lessons very much.