Mrs. Black isn’t in and I’ll have to ring ___. I would appreciate it if you ring ____ after 6 o’clock.
| A．off; back | B．up; off | C．out; up | D．back; off |
推荐试卷
Mrs. Black isn’t in and I’ll have to ring ___. I would appreciate it if you ring ____ after 6 o’clock.
| A．off; back | B．up; off | C．out; up | D．back; off |
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