... an / some for countables some for uncountables a an a sandwich some a / an / some for countables some for uncountables a an some cheese some a / an / some for countables some for uncountables a ... an / some for countables some for uncountables a an a chocolate some a / an / some for countables some for uncountables a an some toast some a / an / some for countables some for uncountables a ... / some for countables some for uncountables a an an egg some a / an / some for countables some for uncountables a an some orange juice some a / an / some for countables some for uncountables...