— I heard they went skating in the mountains last winter. — It _____ true becaus

题型：不详难度：来源：

— 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

C

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。