Not until it was completely dark ______ working.A、had they stoppedB、they stoppe

游客2023-10-26 56

问题 Not until it was completely dark ______ working.

选项 A、had they stopped
B、they stopped
C、they didn’t stop
D、did they stop

答案 D

解析本题考查not until倒装句型，not until位于句首时，主句中主谓部分要倒装，故选D项。

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