请选择CBA7D7{8K+R0_7a9x.\School over. Let′s go to the playground.2m+q/c2x5d/e7?*[.`,N+[
A.am2m+q/c2x5d/e7?*[.`,N+[
B.is2m+q/c2x5d/e7?*[.`,N+[
C.are2m+q/c2x5d/e7?*[.`,N+[