I still can not figure out what is the difference between 'maritum' and 'maritus':(
maritus is the nominative singular, the subject of the sentence, the one 'performing': maritus librum habet -> 'the husband has a book'
maritum is the accusative singular, often the direct object of the sentence, the one 'acted upon'.
Why it doesn't accept "pium habet maritum"? It's a classic order of words in latin.
Because the course-writers are barbarians! :-)
Lector sententiae amore Corinnae moritur! Adest fortasse aliquis qui eandem rem subaudire potest? :-)