Пассивный залог

Перевести предложения с указанием времени.Перевести предложения, поставив глаголы в нужную форму.
1. Many experiments (to carry out) in our laboratory during this week.
2. A student conference on this problem (to hold) now.
3. These subjects (not to study) during 2 years in our department.
4. When mother came into the room, the child (to examine) by the doctor.
5. He (to offer) many books on the subject of his report last time.
6. The newspaper reporters (to interview) near the hotel for a long time.
7. This book (to publish) in many countries next year.
8. She (to ask) many questions for 15 minutes after her report. (15 – прописью)
9. Hush! The very important issue for our institution (to discuss).
10. The children (to perform) a play for their parents for an hour and a half yesterday.
11. The tickets (to reserve) for you in the box office of the circus tomorrow.