Not until the car looked almost new cleaning it.1网
A. John stopped
B. did John stop
C. stopped John
D. John did stop
网友回答
A. John stopped
(答案→)B. did John stop
C. stopped John
D. John did stop
解析：考查倒装句。Not until 放在句首时用部分倒装，从句不倒装，主句倒装，根据语境应用过去式，句意：直到这辆车看起来几乎是新的，约翰才停止了擦车。故选B。