— I heard they went skating in the mountains last winter. — It true because there was li

问题补充：

— I heard they went skating in the mountains last winter.

— It true because there was little snow there.

A. may not be

B. won’t be

C. couldn’t

D. mustn’t be

答案：

A. may not be

B. won’t be

(答案→)C. couldn’t

D. mustn’t be

解析：根据所提供的情境there was little snow说明对方所说的去山里滑雪这件事不可能是真的。couldn’t be true表示过去不可能。选项A用来表示现在可能不是真的。