1. The book has been read by many students.
2. The project has been completed on time.
3. The letters have been sent to all participants.
4. The homework has been checked by the teacher.
5. The room has been cleaned before the guests arrived.
6. The results have been announced to the public.
7. The movie has been watched by millions of people.
8. The cake has been baked for the celebration.
9. The new policy has been implemented successfully.
10. The car has been repaired by the mechanic.
Обратите внимание: В каждом из этих предложений мы видим, что действие произошло, и оно имеет значение в настоящем. Например, в предложении "The book has been read by many students" мы понимаем, что книга была прочитана, и это важно для текущего момента, возможно, для обсуждения или анализа.