【题目】Jack ___________ yet, otherwise he would have phoned me.
A. mustn’t have arrived B. shouldn’t have arrived
C. can’t have arrived D. needn’t have arrived
在线课程【答案】C
【解析】考查情态动词。句意是Jack不可能昨天就到了 否则他就给我打电话了 对过去的推策 又是不可能 只能是can t have done 后面otherwise的假设是不存在的 也就是虚拟语气 又是过去的意愿 只能用 would have done。根据句意可知选C。