Rather off-topic, but I've always felt that anger is not a real emotion - it's something else. Real or instinctive emotions like sadness, frustration, disappointment, humiliation, etc, is a primary feeling one cannot avoid. Anger could follow soon thereafter, but that's a secondary phase and much more of a choice than a raw emotion. No-one gets angry first, there is always another (raw) emotion starting things off.
I just reported this, using the tick-box "the esperanto sentence is wrong" (since there was no option for what actually happened). The Esperanto sentence was fine. My answer was marked as correct, but it was actually wrong: I wrote "emoĉio". This was not highlighted, and only my other typos were underlined. Please fix! Note: I am using this Esperanto keyboard (https://connectina.co.uk/esperanto/eo-win-keyboard.html), perhaps that's where the problem arose?