填空题 Ann can't (receive) 1 my letter, otherwise she would have replied before now.
  • 1、
【正确答案】 1、have received    
【答案解析】本题测试的是情态动词表示推测的用法。全句的意思是：“安可能没有收到我的信，要不然，她早该给我回信了。”根据上下文可知，空格处要填的谓语动词表示对过去行为的否定判断，用couldn't have received或can't have received均可。