Заполнить пропуски артиклями a/an или the, или неопределенным местоимением some/any

Are there ___letters for me this morning?

Are you Canadian? I have __ friends in Canada.

__ people couldn't sit down at the party because there weren't _____ chairs.

I don't play ____ cards/

I'd like to wash my hair, so I want ___ shampoo.