The police knew nothing about the case __ you phoned them.A while B since C after D until

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The police knew nothing about the case __ you phoned them.A while B since C after D until
The police knew nothing about the case __ you phoned them.A while B since C after D until

The police knew nothing about the case __ you phoned them.A while B since C after D until
选d not(这里是nothing)...until 表示直到.才.
这句话是 直到你给警察打电话的时候他们什么都不知道

D.
警察不知道那个案子,直到你打电话给他们。
A. 你打给他们的时候
B。从你打给他们以后
C。你打给他们之后