The Three Musketeers - Chapter 2

Why is this chapter called "Athos, Porthos and Aramis"?

Why did d'Artagnan feel silly when going to see Monsieur de Tréville?

Why was Athos missing when Monsieur de Tréville summoned them?

What was Monsieur de Tréville's reaction when he saw Athos at the door?

Why did d'Artagnan run from the room he was with Monsieur de Tréville?

State the reasons, the places and time of d'Artagnan's duels with Athos, Porthos and Aramis?

What happened when first duel was about to start?

What happened to d'Artagnan after the fight with the Cardinal's Guards?