What's happened?
He's just missed the bus.
What's he done?
He's just cought a fish
What's happened?
She's just woken up. The alarm clock's just rung.
What have they done?
They've just robbed a bank.
What has he done?
He's just broken the window.
What's happened?
She's just fallen down.
What have they done?
They've just had a dinner.
Where has he been?
He's just been to the swimming pool.