Student or Learner
I am writing a formal letter in AE. Although my English as a secondary language is quite good, I doubt whether to use 'what' or 'where'
in the following sentence:
'I am not sure what/where this interest stems from.'
I would like to hear some opinions by native speakers. Thanks a lot!
Welcome to the forum.
I'd use "where".
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.