I've taken the liberty of rewording some of the questions on the grammar test to make their meaning clearer. All of these were the subject of complaints on the associated thread except for:
verbal negation with a negative indefinitenegative indefinites that preclude verbal negation (e.g. English "Nobody listened" instead of *"Nobody didn't listen")- conjunction
A, B and C"A and-B", i.e. "and" does not precede or follow the whole list and is not a suffix
The second one is just wrong. Haspelmath said nothing about how conjunctions are used in lists with more than two items. He said that "A and-B" was the SAE structure as opposed to "A-and B", "A-and B-and" and "A B-and". (The use of a hyphen in "A and-B" is slightly unclear given that he doesn't mean that "and" has to be a prefix, so I've added a short explanation as well.) At least one person interpreted "A, B and C" as meaning that "A and B and C" doesn't fully meet the condition, which is not at all suggested by the paper.
I've also merged the last two "one point" questions back into a single question and replaced "gerund" with "converb" and a short definition to make it clear that these are really part of the same idea.
All this confusing and misleading wording came straight out of the Wikipedia article, so we can blame whoever added it there. That article stinks IMO. I've tried to improve it a little, but it's hard. This is also where "predominantly suffixing inflectional morphology" and "nominative–accusative morphosyntactic alignment" come from, and they were unsourced in 2013 and still are. I suggest replacing them with "a prominence of anticausative verbs in inchoative-causative pairs" and "syncretism of instrumental and comitative cases", which are from Haspelmath's paper and properly sourced to it.
If you object to any of my changes, say so. I also have some thoughts on how the phonology test could be improved (my web page is unchanged from the last version by Nortaneous), and I'll post those here if there's interest.
PS -- anyone remember me? I signed up in 2016 but dropped out of conlanging for an extended period due to real life. I wasn't very interesting.
Edit: linked to the middle of the phonology thread by mistake