Iflawandorder(),neitherthecitizennorhispropertyissafeA.arenotpreservedB.isnotpreservedC.werenorpreservedD.havenotbeenpreserved选项给的是B就是弄不懂这道题的单复数,

Question

If law and order( ),neither the citizen nor his property is safe
A.are not preserved
B.is not preserved
C.were nor preserved
D.have not been preserved
选项给的是B 就是弄不懂这道题的单复数,

Answer 1

时态上没关系了吧?
从句和主句的失态要一致...
不是所有用and连接的都要是复数的,这里的law and order（还可用regulation)是指“法律法规/制度”,虽然是用and的两个词,但要表达是一个概念,是作为一个整体理解的,所以用is.
比如：Knife and fork 也是用的is,就是指刀叉