B. 1. What are they discussing? 2. The professor is examining our group. 3. The Spartans were celebrating a religious festival when a messenger came from Athens. 4. They are building a new school in our district. 5. What film are they demonstrating in the lecture room? 6. They were watching a feeling that someone was following him. 7. They were watching and taking pictures of a UFO. 8. They were interrogating the first witness when I came into the courtroom. 9. They are counting the prize money. 10. They are relieving him of his duty because of his age.

Перевод задания: Измените форму сказуемого, используя страдательный залог.

1. What is being discussed by them? (Что ими обсуждается?)
2. Our group is being examined by the professor. (Наша группа проверяется профессором.)
3. A religious festival was being celebrated by the Spartans when a messenger came from Athens. (Спартанцы праздновали религиозный праздник, когда из Афин прибыл посланник.)
4. A new school is being built in our district. (В нашем районе строится новая школа.)
5. What film is being demonstrated in the lecture room? (Какой фильм демонстрируется в лекционном зале?)
6. A feeling that someone was following him was being experienced by him. (Им испытывалось ощущение, что кто-то следит за ним.)
7. A UFO was being watched and pictures of it were being taken. (За НЛО наблюдали и фотографировали его.)
8. The first witness was being interrogated when I came into the courtroom. (Первого свидетеля допрашивали, когда я вошёл в зал суда.)
9. The prize money is being counted. (Призовые деньги пересчитываются.)
10. He is being relieved of his duty because of his age. (Его освобождают от обязанностей из-за возраста.)

Правило: формы Continuous Passive образуются с помощью to be в нужном времени, being и причастия прошедшего времени: is/was being + Participle II.