Understanding the Correct Answer
In the sentence "Sam washed the car after he ______ it with gas," the correct answer is option 'a) had filled'. This choice reflects the proper use of the past perfect tense, which is essential in this context.
Why "had filled" is Correct
- Sequence of Events: The past perfect tense ("had filled") is used to indicate an action that was completed before another action took place in the past. In this case, filling the car with gas happened first, followed by washing it.
- Clarity of Timeline: Using "had filled" clarifies the order of events for the reader. It establishes that the filling of gas was a prerequisite for washing the car.
Other Options Explained
- b) have filled: This option is incorrect because "have filled" is present perfect and implies a connection to the present, which does not fit the context of past actions.
- c) fills: This choice is also incorrect as "fills" is the simple present tense, which is not suitable for describing past events.
- d) filled: While "filled" is the simple past tense and could convey a past action, it does not emphasize the sequence as effectively as "had filled."
Conclusion
Using "had filled" provides a clear and grammatically correct structure that aids in understanding the timeline of actions in the sentence. It is crucial for conveying the correct meaning and ensuring clarity in communication.