Last night the order came that all those infected with the deadly disease .
A. was separated
B. should separate
C. be separated
D. were separated
网友回答
A. was separated
B. should separate
(答案→)C. be separated
D. were separated
解析：虚拟语气考查题。在表示命令、要求、建议等的从句中谓语用(should) do。句意：昨天晚上命令传来感染致命疾病的人应被隔离。