问题补充：
单选题Jack_______yetlastnight,otherwisehe_______me.A.mustn’t have arrived; must have phonedB.can’t have arrived; would have phonedC.may have arrived; need have phonedD.shouldn’t have arrived; can have phoned
答案：
B解析否定推测要用can’t/couldn’t+…;与过去事实相反的虚拟语气,条件句用过去完成时态,主句用过去将来完成时态,即would/should/could/might+have+p.p.。
