Fill in the blank with most appropriate tense: The train ___ before we reached the station.
Show answer & explanation
Correct answer: C
Explanation
Correct Answer
had left
Explanation
The question tests the application of past tenses when two actions happen at different times in the past.
When two past actions occur sequentially, the rule of time precedence applies: the action that happened earlier in time takes the Past Perfect Tense (had + V3), while the action that happened later takes the Simple Past Tense (V2). In this sentence, the train departing happened first, and reaching the station happened second ("reached" is V2). Therefore, the blank must be filled with "had left," making Option 3 the correct choice.
The other options are incorrect because they violate this sequence of tenses:
left is Simple Past, which would imply both actions happened simultaneously, creating a logical contradiction with "before."
leaves is Simple Present, which cannot be paired with the past tense action "reached."
will leave is Simple Future, which incorrectly shifts a completed past timeline into the future.
Key Points
This is one of the most frequently asked tense rules in competitive exams. Look for the structural pattern: [Past Perfect Action] + before + [Simple Past Action] or [Simple Past Action] + after + [Past Perfect Action]. For example: "The patient had died before the doctor arrived."