Run through these a few times until you can recognize them in the dialog
何を しています か？ nani o shite imasu ka? - what are you doing? | this is a good sentence to memorize.
何 nani - what | same as nan || first studied in chapter 2
しています shite imasu - is doing | usually makes verbs into ING verbs - Usage will be covered later
ともだちに tomodachi ni - to a friend | tomodachi (friend) is also good to know