Subject pronouns VS Object pronouns

Who is that woman ? Why are you looking at ... ?

Do you know that man ? Yes, I work with ...

Where are the tickets ? I can`t find ...

I can`t find my keys. Where are ... ?

We`re going out. You can come with ...

I`ve got a new computer. Do you want to see ... ?

Maria likes music. .... plays the piano

I don`t like dogs. I`m afraid of ...

I`m talking to you. Please listen to ...

Where is Anna ? I want to talk to ...

You can have these CDs. I don`t want ...

My brother has a new job, but ... doesn`t like ...

Mary is 11 years old.

Bob and Sam are classmates.

Tina and I are friends.

Ginger is a cat.

You and Bill are at school now.