Could you explain, please, why "went" is only correct here (that says my grammar book)? Can't I use Past Continuious here, can I?
Why in the first example is used "... while I went to park..." (Past Simple) but in the second one - "... while Liam was filling in..." (Past Continuous)? Why that is so if both "go" and "fill in" are action verbs?
It is known that "while" has different meanings - DURING, ALTHOUGH, BUT. Can this fact impact on your choice between Past Simple & Past Continuous?
I left my parents at the teminal building with instructions to get in the queue at the check-in desk while I went to park my car in the long-term car park.
Meg went with Shaun to the photo machine while Liam was filling in the forms.