"Jean Luc bought _______ of popcorn (a bag/ a can)"
"Jean Luc bought a bag of popcorn"
What are these?
These are silverware.
What are these?
These are centerpieces.
What are these?
These are napkins
"I need _______ (a juice, some juice), please".
" I need some juice, please".
What are these?
These are banners.
"I need to buy _______ (sweets (three/ some)".
"I need to buy some sweets"