Измените предложения в прошедшее совершенное время:
1. My friend has prepared the report (by last Monday).
2. The students have done the exercises (by the end of the lesson).
3. Mother has cooked supper (by the time I came home).
4. We have not seen our teacher (before the bell rang).
5. Have you done the work (before I called you up)?
6. He has translated the article (by this time yesterday).
7. She has not bought a present for him (when we came to her place).
Answers & Comments
2. The students had done the exercises by the end of the lesson.
3. Mother had cooked supper by the time I came home.
4. We had not seen our teacher before the bell rang.
5. Had you done the work before I called you up?
6. He had translated the article by this time yesterday.
7. She had not bought a present for him when we came to her place.