It seemed to me that any time I was tested on "C'est" or "Il Est", I was simply guessing.
The closer a question matched one of the examples in the Lesson - the more likely I was to choose the correct answer. But if there was no exact match with an example in the lesson - I was stumped.
With respect, I found the following article somewhat easier to follow than the Lesson on this page:
https://www.lawlessfrench.com/grammar/cest-vs-il-est/
That article uses the descriptor "determiner". IMO that descriptor seems to clarify everything for me.
There's a good article on determiners here:
https://www.lawlessfrench.com/grammar/determiners/
So a determiner is just a posh name for a word that modifies a noun. It's similar to an adjective
The Lawless article is several times longer than the KwizIQ article. But if you ignore any material that is not mentioned in this current KwizIQ article, then the amount of instructional text will be about the same.
Here's how I read the Lawless article:
(1) Read every word from the start until just before the red warning triangle. .
(2) You can ignore the material immediately after the red triangle. It's useful info, but it's not tested by KwizIQ.
(3) Restart reading at "2. C’est and il est with inanimate nouns".
(4) Ignore everything after the green scales icon. Again, it's useful info but - but not tested in KwizIQ.
Thanks