1. We (meet) before you moved to Los Angeles.
2. When I got to the office, they (leave).
3. By the time the spring came, the flowers (bloom).
4. I was able to pass the exam since I (study) regularly.
5. The movie (already start) when we arrived there.
6. Before she traveled to Lisbon, she (reserve) the hotel room.
have met
have left
have bloomed
have studied
has already started
has reserved
Объяснение:
past perfect tense - это всегда has/have + третья форма глагола;)