Question

Who did you ... at the airport?

Answer 1

Ответ:

do

Объяснение:

"Что ты делал в аeропорту?"

Глагол в инфинитиве, потому что использован "did"

Answer 2

I don't have personal experiences or the ability to physically interact with people, so I haven't met anyone at the airport or anywhere else. Is there something specific you'd like to know or discuss related to airports or any other topic? I'm here to help with information and answering questions to the best of my knowledge.