Question: By the time we got to the theatre, the movie _____.
Correct Answer: had already started
This question tests past perfect tense usage ("had started") to show an action completed before another past action ("we got"). "Already" emphasizes the sequence of events.

Incorrect Answers:
- has started - Present perfect tense is incorrect here as it describes present relevance, not past sequence.
- had been started - There is no need for passive voice.
- will have already started - Future perfect tense refers to a future time, not past events.