Directions: Choose the correct option to fill in the blank.
I ______ him since his mother left the town.
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had not seen
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have not seen
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am not seeing
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did not see
B
Correct answer
Explanation
The sentence describes a situation starting in the past and continuing to the present. Present Perfect tense is used for actions that began in the past and continue to or have relevance in the present. "I have not seen him since his mother left the town" is correct because the action of not seeing him started when the mother left and continues to the present. "Had not seen" would be used only if followed by another past event.