Student or Learner
“May I go and play with Dick this afternoon, Mum?”
“No, you can’t go out _______ your work is being done.”
A. before B. until C. as D. the moment
The answer to the test item is C. My question is whether the sentence 'No, you can't go out as your work is being done' sounds natural to native ears. I would say '...before/until your work is done'.
What would you native speakers think of the test item?
Thank you in advance.