Question

“I called you yesterday. A woman answered, but I didn’t recognize her voice.” “Oh, it _____ my aunt Jean.”

A．must be

B．must have been

C．might be

D．can have been

Answer 1

B

解析试题分析：句意：“我昨天给你打电话了，一个妇女接的，但是我没有听出她的声音”“哦，那一定是我的姑姑珍”。根据I called you yesterday可知打电话发生在昨天，所以这里应是对过去的推测，用情态动词+have done，故排除AC；must have been一定是，推测的可能性较大；can have been过去能够做某事，不符合语境故排除，所以应选B。
考点：考查情态动词的用法。