We already know that "in+dem=im". What if "dem" is not suitable in the sentence? That is if the noun requires the definite article other that "dem". How will we write "in the" in german in these cases. in+das=? in+die=? in+den=? in+der=?
I made a dumb mistake and, without thinking, typed "bettzimmer". I understand that's not the correct word for the lessons, but is it wrong? I did a quick google search and it seems like its used to indicate the same thing.