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

游客2024-09-06  10

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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