СРОЧНО ПОМОГИТЕ !!!!!!!!!!!!!ДАМ 20 БАЛЛОВ НУЖНО СРОЧНО

1 He hasn’t called his friend.
2 Misha hasn’t written a letter to his sister.
3 They have bought a new computer.
4 You haven’t walked a dog.

1 He has already finished his work.
2 We haven’t eaten our lunch yet.
3 Have they come to the park?
4 Have you ever seen Red Square?
5 What have we read?