A/AN, SOME, ANY... and more

When do we have to use a/an, some and any?
A/AN: for singular nouns
SOME: for plural nouns
ANY: in negative and interrogative sentences

Online game:

THERE IS /THERE ARE

Play these online games in order to practise THERE IS and THERE ARE:

GAME 1

GAME 2

GAME 3

IN MY HOUSE...