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 spotsmen became/have become world champions two days ago. 6)i lost/have lost my key.can you help me to open the door?
