Final answer:
The French expression 'C'est mon livre' means 'It's my book'.
Step-by-step explanation:
C'est mon livre.
This expression means 'It's my book' in French. 'C'est' means 'it is', 'mon' means 'my', and 'livre' means 'book'. So, when you put them together, you get the phrase 'C'est mon livre'.
Learn more about French expression for possession