— No,pen is on the book. （物主代词）

—  behind the door?

—Yes.

    Tom, his father and his mother are having a picnic in the park. Tom has a packet of sweets and a big bottle of Coke. He is on a swing. His father is sitting under a big tree. Beside him there is a big bag. There is an aero plane flying in the sky. Tom's mother has a pair of sunglasses on her nose.

    Tim's mother is ill. She has a fever. She is in bed. Tim is with his mother. He has to look after(照料) his mother. He can't go to school. Tim's classmate, Dick is very nice. He comes to help Tim with his homework with his deskmate, Mary.

My pencil-box

— It is very long.

It's .