There are only five boys here.We need ----- for a 3-on-3(三对三

A another 三个或三个以上的 “另一个”
the other 通常指两者中的另一个,用于搭配 one...the other.例如,i have two brothers.One is six years old,and the other is eight.
other “另外的”后常接可数名词复数
others 相当于 other + 可数名词复数