If it for the snow, we the mountain the day before yesterday.

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问题 If it ______ for the snow, we ______ the mountain the day before yesterday.

选项 A、were not; could have climbed
B、were not; could climb
C、had not been; could have climbed
D、had not been; could climb

答案C

解析要不是下雪，我们前天应该去爬山了。此句为虚拟语气，从句用过去完成时，主句用could+现在完成时，表示“与过去事实相反的情况”。

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大学英语三级B级

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