I do agree with please and thankyou and all my GC have been taught that. However I wouldn't expect them to knock on the door - we know when they are expected as they
I've a long way away, and they love to creep in and 'surprise' me! They are also taught to wash hands before meals and to ask to leave the table. When my C were little they had a friend who when he came to tea always chanted in a rush 'thankyouformylovelym
Good Morning Friday 19th April 2024