Question

Fill in the blanks with "some", "any", "a" or "an".
B: Sorry, there isn't
coffee left. Would you like
cup of tea?​

Answer 1

Sorry, there isn't any coffee left. Would you like a cup of tea?​

any так как неисчесляемое в отрицании

а так как неопределённый предмет в единственном числе

Answer 2

Ответ:

-Sorry, there isn't  any coffee left. Would you like a  cup of tea?​