When doing my homework,________.
| A．I heard the doorbell ring | B．the doorbell rang |
| C．my mother came in | D．my mother was cooking |
相关试题
It’s difficult for him to without a car.
| A．get off | B．get in | C．get on | D．get around |
The company always great importance to the quality of their products. That’s why there is always a steady increase in sales year by year.
| A．puts | B．attaches | C．makes | D．plays |
Although she had been ill for a long time, it still came as a shock when she died
| A．eventually | B．willingly | C．unexpectedly | D．disappointedly |
The reason he explained at the meeting was he has no time to finish the work.
| A．That; why | B．why; why | C．that; that | D．why; that |
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