That dog ought to be destroyed it attacks any more children.A. untilB. sinceC. afterD. bef

问题补充：

That dog ought to be destroyed it attacks any more children.

A. until

B. since

C. after

D. before

答案：

A. until

B. since

C. after

(答案→)D. before

解析：考察时间状语从句的连接词。结合句意可知D正确。句意：那条狗应该在攻击另一个孩子之前就被杀死。Before…之前。