1. open the brackets using past perfect. 1. i (to finish) my work by seven o’clock. 2. he thought that he (to lose) the money. 3. ann told me that she (to see) an interesting film. 4. when i came home, mother already (to cook) dinner. 5. when father returned from work, we (not to do) our lessons yet. 6. when the teacher entered the classroom, the pupils already (to done) their tests. 7. kate showed me the book which she (to buy) the day before. 8. the teacher understood that lena (not to do) her homework.
2) had lost;
3) had seen;
4)had already cooked;
5) hadn't done;
6) had already done;
7) had bought;
8) hadn't done