题目内容
(请给出正确答案)
[主观题]
The old couple have been married for 40 years and never once ______ with each other.A.they
The old couple have been married for 40 years and never once ______ with each other.
A.they had quarreled
B.they have quarreled
C.have they quarreled
D.had they quarreled
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