1 When the teacher entered the classroom, the pupils had already opened their books
2 Kate gave me the book which she had bought the day before
3 They went to the Hermitage last week
4 They have been to the Hermitage twice this week
5 After school yesterday he came home, has dinner, read an interesting article from the lastest magazine and began doing his homework
6 What the weather is like? It is still raining? No, it stopped raining
7 What will your doing tomorrow? I didn't go to the shop yesterday. I will go to the shop tomorrow