A. leave
B. left
C. had leave
D. None of these
🧠 Explanation:
In the sentence "It is fifteen years since I _ him," the verb "left" fits, indicating a past action of parting. The structure "it is…since" refers to time elapsed since an event, common in English. Proper verb tense ensures clarity in expressing past experiences. This example highlights temporal expressions in grammar, vital for storytelling or personal narratives, ensuring accurate communication of time-related events in writing or speaking across various contexts.
