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!