Exactly. I put that in and I got it wrong... I'm pretty livid atm lol. I'm native Chinese and, it aint too far of a stretch to say that it's kinda outrageous that I'm being denied the rights of my own language
他一个月前参加比赛了。If you're going to force “了” at the end the translation should be. He HAD participated in the competition a month ago. Seeing as how you mark every other thing wrong for inconsequential changes.