Question

i met him while (go) to his office - correct tense

Answer 1

I met him while going to his office

Answer 2

Explanation:

I met him while going to the office is the right answer. "Ing" is needed to be attached with the verb when it is used after the clause while. The tense of the sentence is past. In this sentence the word while is used and the verb go should be "going" in this case. So the sentence is cortectly wriiten as I met him while going to the office.