Question

The old couple have been married for 40 years and never once ________ with each other.

A．they had quarrelled	B．they have quarrelled
C．have they quarrelled	D．had they quarreled

Answer 1

C

C。由否定意义的词never once开头，句子用部分倒装；前一并列分句已经提示要用现在完成时态。