— I phoned you yesterday morning. A girl answered, but I didn’t recognize the voice.
— Oh, it __________ my younger sister. She was in my room at that moment.
A.must have been | B.should have been | C.could have been | D.may have been |
推荐套卷
— I phoned you yesterday morning. A girl answered, but I didn’t recognize the voice.
— Oh, it __________ my younger sister. She was in my room at that moment.
A.must have been | B.should have been | C.could have been | D.may have been |