31．Officials say that few patients with the virus owing to the effective prevention A．infected——青夏教育精英家教网—

摘要：31．Officials say that few patients with the virus owing to the effective prevention A．infected B．are infected C．have infected D．be infected

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Officials say that few patients with the virus owing to the effective prevention

A．infected B．are infected C．have infected D．be infected

Officials say that few patients ________ with the virus owing to the effective prevention．

A．infected

B．are infected

C．have infected

D．be infected

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