sugary food是可数还是不可数

　　The success of the food halls in large stores is due to their convenience.

　　大商店餐饮部的成功源于它们的'便利性。

　　They steadily worked their way through free food and the occasional libation.

　　他们总能设法吃到白食，时不时还能喝上两杯。

　　I don't think Botswana, due to the climate, could ever be self-sufficient in food.

　　由于气候因素，我认为博茨瓦纳不可能在食物方面自给自足。

　　Other people depend on them for food and clothing and all that.

　　其他人指望着他们提供吃、穿及诸如此类的东西。