If penicillin______available, many people______from sickness or even small wounds in the 20th century.

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问题 If penicillin______available, many people______from sickness or even small wounds in the 20th century.

选项 A、had not been; would die
B、is not; would die
C、had not been; would have died
D、should not be; would have died

答案C

解析 考查if条件句中虚拟语气的用法。in the 20th century表明是对过去情况的虚拟,因此从句用“had+过去分词”,主句用“would(could/might/should)+have+过去分词”。
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