Question

Помогите в Passive voise. Please, help me.

11. The briefing is in full swing. The correspondents are interviewing the participants of the conference. 12. The company was developing a new project. 13. You can't watch the film now. The mechanic is fixing the TV set

Answer 1

11. The briefing is in full swing. The participants of the conference  are being interviewied  by the correspondents .
12. A new project was being developed by the company
13. You can't watch the film now. The TV set is being fixed by the mechanic