10 [ten] Yesterday - today - tomorrow

10 [ten] Yesterday - today - tomorrow 

Yesterday was Saturday.
I was at the cinema yesterday.
The film was interesting.
Today is Sunday.
I'm not working today.
I'm staying at home.
Tomorrow is Monday. 
Tomorrow I will work again. 
I work at an office.
Who is that?
That is Peter.
Peter is a student.
Who is that?
That is Martha.
Martha is a secretary.
Peter and Martha are friends.
Peter is Martha's friend.
Martha is Peter's friend.