. If law and order _____, neither the citizen nor his family is safe.
A．a(chǎn)re not preservedB．is not preserved
C．were not preservedD．have not been preserved
B
考查主謂一致。句意：如果法律法規(guī)得不到保護(hù)那么居民以及家人的安全得不到保障。  law and order指的是一個(gè)概念看成單數(shù)謂語(yǔ)也要用單數(shù)故選B
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