IV. Complete the sentences with the Present Perfect form of the verbs in brackets. (12 баллов) 1. He _____________________________ (not call) his friend. 2. Misha _______________________________ (write) a letter to his sister. 3. The children ___________________________ (clean) the forest. 4. She _____________________________ (not walk) the dog. 5. They _________________________ (buy) a new computer. 6. I _________________________ (leave) the book at home.

1.has not called
2.has written
3.have cleaned
4.has not walked
5.have bought
6.have left