题干
— Was the driving pleasant when you went to Mexico last summer?
— No, it ____ for four days when we arrived, so the roads were very muddy.
— No, it ____ for four days when we arrived, so the roads were very muddy.
A：was raining
B：had been raining
C：would be raining
D：rained
答案(点此获取答案解析）
B
)，正确的顺序是( )