B. Use Past Perfect Passive.
1. All the tickets ... already ... (sell) by Monday.
2. When I returned all my things ... already ... (pack).
3. The room ... (prepare) for them but they didn’t arrive.
4. I learned that my son ... (accept) to college.
5. The experiment... (complete) by late at night yesterday.
All the tickets had already been sold by Monday.
2. When I returned all my things had already been
packed
3. The room had been prepared for them but they didn’t arrive.
4. I learned that my son had been accepted to college.
5. The experiment had been completed by late at night yesterday.