1. When I (to come) home, mother already (to cook) dinner. 2. When the teacher (to enter) classroom, the pupils already (to open) their books. 3.Nick (to show) the teacher the picture which he (to draw 4.The teacher (to understand) that Lena (not to do)her homework. 5. Aan (to tell) me that she (to see) an interesting film. 6. When father (to return) from work, we already (todo) our homework. 7. Kate (to give) me the book whiche she (to buy) the day before. 8. Mother (to see) that Nick (not to wash) his hands. 9. When we (to come) to the station, the train already (to leave). 10 He (to study) French before he (to enter) the University.​