How time flies! Well graduate. Three years really s short time. A. was B. are C. is

问题补充：

How time flies! Well graduate. Three years really s short time.

A. was B. are C. is

答案：

解析：考查主谓一致。“三年的时间很短”是事实，故选一般现在时态。“三年的时间”是指一个时间段，作为第三人称的单数。