The fire started on the second floor and it wasn't long ______ the whole building was burned down.
①共同开拓了祖国的辽阔疆域 ②真正实现了人民当家作主
③共同捍卫了国家的独立和尊严 ④共同建立了新中国
下列四位同学的行为属于正确维护隐私权的是( )