.
Tim
.
Listen
.
May I go out?
.
Line up.
.
Stand up
.
May I come in?
.
Stand up
.
Billy
.
Sit down
.
Open your book
.
Raise your hand.
.
Listen to your teacher.
.
Close your book.
.
Sit down
.
Open your book
.
Listen
.
Rosy
.
May I come in?
.
Look
.
Sing