Not until the motorbike looked almost new repairing and cleaning it.
A. he stopped
B. did he stop
C. stopped he
D. he did stop
网友回答
A. he stopped
B. did he stop
C. stopped he
(答案→)D. he did stop
解析：句意：他把摩托车擦洗和修补的和新的一样时才停下来。Not until引导的状语从句位于句首时，主句部分需部分倒装。