Direction: In the following questions, a sentence/part of the sentence is printed in bold. Below are given alternatives to the bold sentence/part of the sentence at (1), (2) and (3) which may improve the sentence. Choose the correct alternative. In case no improvement is needed, your answer is (4).
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He may have grown taller when I last saw him.
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- from when I last saw him
- since I last saw him
- before I last saw him
- No improvement
Correct Option: B
since (Conj.) : from an event in the past until now; used with Present Perfect-have grown
Hence, Since I last saw him is the right usage.