She is a wellknown doctor now, but she ________ as a cleaner at the hospital f
题型：不详难度：来源：
She is a wellknown doctor now, but she ________ as a cleaner at the hospital for five years.| A．has worked | B．worked | | C．had worked | D．works |
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答案
| B |
解析
| B 考察动词时态。句意：她现在是一个有名的医生，但是以前她在那家医院里做了五年的清洁工。分析句子可知，她现在是医生，当清洁工是五年之前发生的事情，所以使用一般过去时，表示过去发生的事情。故B正确。 |
举一反三
—The heavy snow hasn"t caused any inconvenience to people in Nanjing, has it?
—Yes. Just imagine the city ________ with nearly 20 centimeters of snow one night.| A．has been hit | B．was hit | | C．had been hit | D．is hit |
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—Was he still there when you were away to answer the phone?
—There is no doubt about it, but he ________ soon afterwards.| A．had left | B．has left | | C．is leaving | D．left |
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—That must have been a terrifying experience.
—Yeah. I ________ in the damaged car, unable to move.| A．was stuck | B．have been stuck | | C．am stuck | D．had been stuck |
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—Have you heard about that school bus accident?
—Yes, fortunately all on board including the driver ________.| A．were saved | B．was saved | | C．have saved | D．has been saved |
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After working until midnight for two weeks, he finally ______ and had to stay in the hospital.| A．broke up | B．gave in | C．broke down | D．gave up |
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