Используйте необходимое местоимение.

1. I wrote ... a letter, (them, his, mine, I)
2. This is ... book, and that is ... . (yours, myself, my, them)
3. Mike was at school yesterday. I saw him there ... and talked to him. (myself, himself,
themselves, he)
4. ...goes for a walk every day. (I, they, she, it)
5. ...were absent at the lesson, (he, myself, his, they).