Almost (every) fruits and vegetables contain riboflavin; the (richest)sources are (leafy) green vwgetables (such )as sinach,kale or turnip greens.
every可以修饰复数么?
(Essential) a nineteenth-century instrument,the calliope was usually played outdoors and was (a part) of fairs,(holiday) gatherings, and (other such) activities.
part?