题干
---- Was the driving pleasant when you vacationed in 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 running
B：had been raining
C：would be raining
D：has rained
答案(点此获取答案解析）
B
