One fifth of the population here ( ) farm workers .填is are?

问题描述:

One fifth of the population here ( ) farm workers .填is are?

are
例句
About one-third of the adult homeless population are veterans只能用"are"吗?还是两个都能用,但are用的更多一些?one fifth of the uninsured population is able to afford insurance这是用单数的情况。基本都用ARE。