They demanded that the law on gun ownership , otherwise more murders will arise.
A. will be changed
B. should change
C. is changed
D. be changed
网友回答
A. will be changed
B. should change
C. is changed
(答案→)D. be changed
解析：考察虚拟语气.句意:他们要求有关枪支拥有的法律应该改变,否则更多凶杀可能产生.在要求命令等后面的从句内容应使用should虚拟语气,其中should可以省略,故后面动词用原形,选D.