Few people paid full attention to their health conditions___they were seriously ill.A.when B.if C.until D.before.为什么不选D

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Few people paid full attention to their health conditions___they were seriously ill.A.when B.if C.until D.before.为什么不选D

Few people paid full attention to their health conditions___they were seriously ill.A.when B.if C.until D.before.为什么不选D
Few people paid full attention to their health conditions___they were seriously ill.
A.when B.if C.until D.before.
为什么不选D

Few people paid full attention to their health conditions___they were seriously ill.A.when B.if C.until D.before.为什么不选D
until 用在否定句里not...until.这里few 表示否定.
这句话的意思是:
人们直到病得很严重了才开始重视他们的身体状况.

是“直到”的意思,意思是还没生病。
如果是D,就已经生病了,不是假设语气。

其实很简单,你选D的话,只要把前面的paid改为had paid就可以了。