The old couple have been married for 50 years and never with each other
A. they had quarreled
B. they have quarreled
C. have they quarreled
D. had they quarreled
网友回答
A. they had quarreled
B. they have quarreled
(答案→)C. have they quarreled
D. had they quarreled
解析：考查倒装句，否定词放在句首使用部分倒装。根据时态要前后保持一致，前半句是现在完成时态，后半句应该也是现在完成时态，never放在句首，使用部分倒装，所以选C。