Вставьте а там, где это возможно. В остальных случаях вставьте some.
we have got----------- carrot.
we have got----------- cheese.
we have got----------- milk.
we have got----------- tomato.
we have got----------- dread.
would you like----------meat?
would you like----------nuts?
would you like----------nut?
would you like----------sweet?
would you like----------sweets?