1; The boy is thinking about writing a letter to a friend
2; First he writes the date. it's March 3
3; Then he writes the letter beginning with a greeting
4; He finishes writing the letter and signs his name
5; He folds the letter
6; He put the letter into an envelope
7; He licks the edge of the envelope to seal it
8; He presses the letter flap down
9; He addresses the letter
10; He puts his return address in the left-hand corner
11; He gets a postage stamp
12; He licks the postage stamp
13; He puts the stamp in the upper right corner of the letter
14; He walks to the mailbox
15; He puts the letter into the mailbox