Помогите с пассивом

1. These students can finish the building of this model very soon.

2. The scientists have given the newspaper reporters a long interview today. (2)

3. When shall I return this book to the library?

4. We weren't at the conference as they had not invited us.

5. The teacher has been explaining the rule to the students for 10 minutes. ​

Ответ:1.The building of this model can be finished very soon by these students.

2.A long interview have been given the newspaper reporters by the scientists today.

The newspaper reporters have been given a long interview by scientists today.

3.When shall be this book returned to the library?

4.We weren't at the conference as we hadn’t been invited.

5.The rule has been explained to the students for 10 minutes by the teacher.

Объяснение: Все как по формуле: мы оставляем вспомогательные глаголы (am/is/are или was/were для Continuous; have/has/had для Perfect) дальше прибавляем глагол для пассива to be, но меняем его в зависимости от времени (Cont - BEING, Perf - BEEN, а смысловой глагол ставим в III форму. Формула такая: всп гл + to be + Viii

С модальными глаголами can, must, should, will просто добавляем to be + Viii (it can be done)