Present perfect or Past Simple

Scientists ............animals many years ago

... you done your homework yet?

My mum ...just........... a cake.

My friend (not to be) at school yesterday.

I ... at the circus yesterday.

2. We ... at the playground yesterday.

3. Children ...at the school yesterday, they were at home.

... you at school yesterday?

No, I ...

... it (stop) raining yet?

When Jill (finish) school?

I can't find my umbrella. I think somebody (take) by mistake.

- Are you tired?

- Yes, a little. (I paint) the ceiling today.