................................
May I stand up? No, you can't
...............
come in
May ...........? Yes, ...............
May I come in? Yes, you can.
...........
Open
..........................
May I close the book? No, you can't
............
Book
.............
close
.............
go out
May.............? No, .............
May I go out? No, you can't
.............
Stand up
........................
May I open the book? Yes, you can
..........
Sit down