Question

–What do you often do ________ classes to relax?
–Listen to music or walk around the school.
A. over     B. through     C. between 

Answer 1

C

介詞辨析。Over越過；through 通過；between 在兩者之間。句意；你在課間常常做什么來放松？結合語境可知本句指的是在兩堂課之間，故選C。