"The old cat died yesterday."
Translation:De oude kat stierf gisteren.
How about "De oude kat gisteren stierf." I also seems right to me, even though Duo did not agree. Anyone know if it was mine or Duo's mistake? Dankjewel, dames en heren.
Your word order is: Subject - time - verb
The standard word order in Dutch is: Subject - verb - rest (time/manner/place/other verbs)
While there is some flexibility in word order, you cannot place other elements between the subject and verb in the main clause.