问题
选择题
. If law and order _____, neither the citizen nor his family is safe.
A．are not preserved
B．is not preserved
C．were not preserved
D．have not been preserved
答案
答案：B
考查主谓一致。句意：如果法律法规得不到保护那么居民以及家人的安全得不到保障。 law and order指的是一个概念看成单数谓语也要用单数故选B