I have just eaten a chocolate cake.
She has worked there since 2000.
They have written the inform for the boss.
You have drunk alcohol for many years.
He has just gone to the club.

Have you read this best seller?
Has she played tennis?
Has he been in Europe?
Have you made your homework?
Have we studied our lesson?

He hasn´t studied yet.
You haven´t worked since last year
They haven´t gone to the cinema.
She hasn´t had her shower yet
You haven´t been in your house