I always go to sleep _____the light on because I amafraid of the dark when I am alone in a place. [ ]

I like koalas. They sleep ______the day, but at night they get up.[ ]

___is the girl in a red jacket? —She is Sally, my sister.

Eight hundred and eighty-eight million, eight hundred and eighty-eight thousand, eight hundred and eighty-eight is _________.

There _______always many visitors in Beijing on National Day.