Раскройте скобки, употребляя гла голы в Past Simple или Past Perfect.When I (to come) home, mother already (to cook) dinner.When the teacher (to enter) the classroom, the pupils already (to open) their books.Nick (to show) the teacher the picture which he (to draw). The teacher (to understand) that Lena (not to do) her homework.Ann (to tell) me that she (to see) an interesting film.When father (to return) from work, we already (to do) our homework.Kate (to give) me the book which she (to buy) the day before.Mother (to see) that Nick (not to wash) his hands.When we (to come) to the station, the train already (to leave). Не (to study) French before he (to enter) the university.Помогите пожалуйста

1. came home...had already cooked. 2. entered...had already opened3. showed...he had drawn4. understood...Lena hadn't done5.told me...she had seen 6.returned...we had already done7. gave me...she had bought8.saw...Nick hadn't washed9. came...the train had already left10. studied...he had entered