Решение:
1. The director asked if they were at the conference.
2. The secretary said that the article had been translated into English.
3. The dean asked if they would inform us about their trip.
4. The manager asked if the tickets had been booked.
5. The boss strictly told not to leave the documents on the table.
6. The clerk asked when they would clean their office.
7. The lecturer said that the secretary was still typing the report.
8. The lecturer asked who had been invited to the congress.