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

解析試題分析：句意：“我昨天給你打電話了，一個婦女接的，但是我沒有聽出她的聲音”“哦，那一定是我的姑姑珍”。根據(jù)I called you yesterday可知打電話發(fā)生在昨天，所以這里應(yīng)是對過去的推測，用情態(tài)動詞+have done，故排除AC；must have been一定是，推測的可能性較大；can have been過去能夠做某事，不符合語境故排除，所以應(yīng)選B。
考點：考查情態(tài)動詞的用法。