There is a ten-minute break _____classes.A.between B.among C.of D in

There is a ten-minute break _____classes.A.between B.among C.of D in
There is a ten-minute break _____classes.A.between B.among C.of D in

There is a ten-minute break _____classes.A.between B.among C.of D in
A
因为是课间,强调两者之间,between
among强调三者或者三者以上

A
每节课之间