The police knew nothing about the case______your father phone them.A、afterB、sin

游客2024-06-26  13

问题 The police knew nothing about the case______your father phone them.

选项 A、after
B、since
C、as
D、until

答案 D

解析 not…until…意为“直到…才…”,故选D。如果选B,主句则要用完成时态。
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