Kid's Box 2 Unit 2- Page 17 (Be Polite !)
Homework ; to practice speaking the following sentences

                    A : Can I come in , please?
                    B : Yes, of course.
                   A : Can you open the window, please?
                   B : Yes, of course.
                   A : Thanks.
                  B  : Can you spell the ruler, please?
                  A  : Yes, of course . R-U-L-E-R.