Some of you might not know that quite a few clozes have alternative answers (depending on the language pairing), which can only be seen by looking closely at the cloze. By studying the alternative answers, you can learn about useful synonyms, which makes them a useful aid to learning.
My suggestion is that if an alternative answer is defined for a cloze, it should be displayed automatically after answering, just like the Notes field and the Pronunciation field.
Update: it seems I made the same suggestion a few years ago, to no effect. 
https://forum.clozemaster.com/t/request-to-show-alternative-answers/15453?u=morbrorper