问题描述：
the old couple have been married for 40years and never once ( )with each other .A they had quarrel
the old couple have been married for 40years and never once ( )with each other
.A they had quarreled
B they have quarreled
C have they quarreled
D had they quarreled .
the old couple have been married for 40years and never once ( )with each other
.A they had quarreled
B they have quarreled
C have they quarreled
D had they quarreled .
问题解答：
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