1. The plane has landed at the airport.
1.1. The plane hasn`t landed at the airport.
1.2. Has the plane landed at the airport?
1.3 Where has the plane landed?
2. My niece has eaten all burgers.
2.1 My niece hasn`t eaten all burgers.
2.2 Has my niece eaten all burgers?
2.3 What has my niece eaten?