Ответ:

Нужно преобразовать предложения из активного залога в пассивный.

1. Meteorologists collect weather reports from all parts of the country.

  Weather reports are collected by meteorologists from all parts of the country.

2. The librarian will have entered the new books in the register before another parcel arrives.

  The new books will have been entered by the librarian in the register before another parcel arrives.

3. They will not finish this work tomorrow.

  This work will not be finished tomorrow.

4. The workers are repairing the road.

  The road is being repaired by the workers.

5. Are they cleaning the room now?

 Is the room being cleaned now?

6. The company hadn't shipped the cargo to the town before the agent arrived.

   The cargo hadn't been shipped (by the company) to the town before the agent arrived.

7. The guide met the tourists at the station.

  The tourists were met by the guide at the station.

8. Have you called for the doctor?

   Has the doctor been called for?

9. The children were discussing the novel when their teacher entered the classroom.

 The novel was being discussed by the children when their teacher entered the classroom.

10. He showed me the way to the railway station.

  I was shown (by him) the way to the railway station.

Объяснение:

Пассивный залог образуется с помощью вспомогательного глагола be и формы Past Participle (смыслового глагола в 3 форме). Схемы по временам см. ниже во вложении