33. 1. We finished/have finished our work. It's time to have a rest now.
2. In the last lesson the students took/have taken a very difficult test.
3. We did/have done this exercise. Give us the next one.
4. No, thank you. I ate/have eaten too much.
5. Eight Russian sportsmen became/have become world champions two days ago.
6. I lost/have lost my key. Can ypu help me to open the door?