Yes, and it is now, but unfortunately it takes a while for our changes to go live for users.
Not sure, but there is no "in" in the sentence. It's basic SOV (subject/object/verb). The preposition is "at", not "in".
At any rate definite articles like "the" were not used.
Try this link:
Then again I tried learning Latin on my own with a book and found it too difficult at the time, so consult an expert.
The preposition is not used in Latin because "domi" is in the Locative case. Most regular nouns don't have this option, but this is an exception! We still use it in English where necessary to create a grammatical sentence. That's also the case with articles, Latin doesn't use articles so both "a/an" and "the" are accepted, but we require one of them when it's necessary to have grammatical English.
Im not sure how im supposed to infer "ea" from "tu" for "pick the missing word"
From the form of the verb. "Dormit" is 3rd person singular, 2nd person singular is "dormis".