The Sun, the Moon and the Earth fill in the blank

Day and night happen because the Earth is always ____________________ .
When it is ____________________ , there is light .
When it is night , it is ____________________ .
The moon is ____________________ , but sometimes we can only see a part of it .
There is no ____________________ on the Moon .
There are ____________________ on the Moon .
The Sun is a ____________________ .
The Sun gives us light and ____________________ .