10-11高三上·北京·期中
1 . —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.
—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 |
您最近一年使用：0次
