I love reading! But shouldn't they have put "Tu lit ton livre."??
I think it only sounds like "lit ton" because the "s" in "lis" is silent, so you get the pronunciation "li ton". But the verb conjugates to
Why 'ton' instead of 'ta'?
Livre is masculine. Masculine for "your" would be "ton". Feminine for "your" would be "ta".
You read your book is surely correct!