a group of enemies or ,a group of enemy

a group of enemies or ,a group of enemy a group of a group of man 还是a group of men 为什么？ 用a group of 造句. a group of 中文意思 a group of classmates是什么意思 A group of young birds! a group of 怎么用 enemies. group of A group of stuents 是单数复数? 用with a group of frends 造句 A GROUP OF 变复数怎么变 group,a,of,people,are,young,swimming speak in front of a group a group of soldiers啥意思 in front of a group中文意思 I have a group of friend是什么意思.