—When is National Public Memorial Day(国家公祭日) ? —On December 13th. And it can us of the hard days in the past.
The reporter said that the UFO ________ from north to south when he saw it.
Hurry up, everyone ________ for you.
Trees __________ on Tree Planting Day only.
Sorry, smoking ________ here.
Some rules _________ to stop people from polluting the environment.