she ran ( ) the room when she heard the alarm.off,out of,outdoor,out.为什么选b?

she ran ( ) the room when she heard the alarm.off,out of,outdoor,out.为什么选b?
she ran ( ) the room when she heard the alarm.off,out of,outdoor,out.为什么选b?

she ran ( ) the room when she heard the alarm.off,out of,outdoor,out.为什么选b?
固定用法：run out of . .从……跑出来