"Wij hebben een ambulance nodig."
Translation:We need an ambulance.
Why 'we hebben een ambulance nodig' is not correct?! Wij=we (in dutch), right?!
Perhaps he had a listening exercise, and since the pronunciation of "we" and "wij" is different only one will be accepted.
Yes, I had a listening exercise, but the pronunciation of 'we' and 'wij' might sounds the same sometimes. Thank you for your replies.