Составьте 3 предложения present perfect пассивного залога, а потом эти же 3 предложения переделайте present perfect активного залога.

That key has been lost 
Those buildings has been built lately 
What an aweful smell! It s has been burnt fathere's pie!!

My mum has lost her key
They have built those buildings lately
What an aweful smell! It s  my father has burnt his pie!