Вместо точек вставьте соответствующие притяжательные местоимения:my ,mine,her ,hers ,it ,its,your ,yours,etc.
1. Tell him not to forget … ticket; she mustn't forget … either.
2. Whose books are those? Are they … or …?
3. I see that he has lost … pencil; perhaps you can lend him....?