Упражнение 1. Change the sentences with Present Perfect Active into Present Perfect Passive. Example: I have already finished my work. My work ... - My work has already been finished. 1. I have already taken the books back to the library. The books ... 2. She has just posted those letters. Those letters ... 3. The teacher has already checked my test. My test ... 4. He has lost the key. The key ... 5. We have opened all the windows. All the windows ... 6. I have bought bread on the way home. Bread ... 7. I have done this exercise. This exercise ...