"Ik vroeg of ik naar de wc mocht gaan."
Translation:I asked whether I was allowed to go to the toilet.
As numerous teachers have told me, everyone "can" go to the bathroom, you only ask if you "may" go to the bathroom.
The translation I received had "loo" instead of "toilet". We never use "loo" in the U.S.
Both toilet and loo should be accepted, though the former is listed as the "best" translation. Other accepted answers are: lavatory, restroom, bathroom and washroom.
Not all users are from the US, we also (try to) accept British English.