Choose the option that best completes the gap(S).The train _____ before i arrived?

Choose the option that best completes the gap(S).The train _____ before i arrived?

Answer Details

The best option that completes the sentence is "had left". This is because the sentence is in past tense and refers to an action that happened before another action in the past. "Had left" is the past perfect tense and indicates that the train left before the speaker arrived.