a group of man 还是a group of men

a group of man 还是a group of men Once there was a group of men-a young hot-blooded man and a a group of用法 a group of A group of young men are going ______the forest. the visitor came in,___by a group of young men. one of a group of a group of enemies or ,a group of enemy a group of classmates是什么意思 a special group of doctors a group of 的用法. A group of young birds!