Trip to national Gallery

On Tuesday 5th of November, We went to the national gallery it was really nice and on our way we saw queen elizabeth 2nd on a carrige( just by chance). All my classmate keeps saying "hi!" to the police who keeps on guard. It was so funny!!! one time when we were at the park to have our lunch a group of soliders went pass us, everyone started to say "hi","peace!". some reply peace and some wink and one of them stick their tounge out.