should be
This structure indicates expectation or what is supposed to happen.
Exemplos
作物は元気なはずです。
The crops should be healthy.
作業は終わっているはずです。
The work should be finished.
苗は十分に成長しているはずです。
The seedlings should be growing well.
Verificação rápida
As colheitas devem estar saudáveis. 作物は元気な___。