答案有误,肯定是B.
the other students比other students多了限定范围,根据句意,排除CD；
another five minutes = five more minutes,意思是“再/另外五分钟”,正解；
other five minutes句序有误,应该是five other minutes,但是句意不通,因为其意思是“其他的五分钟”.
相信自己.