摘要： Mr. Smith works as a government official now, but he in a middle school for 5 years. A. has worked B. worked C. had worked D. had been working
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Mr. Smith works as a government official now, but he ______ in a middle school for 5 years.
A. has worked B. worked C. had worked D. had been working
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Mr. Smith works as a government official now, but he ________in a middle school for 5 years.
A. has worked B. worked C. had worked D. had been working
查看习题详情和答案>>
Mr. Smith works as a government official now, but he ____________ in a middle school for 5 years.
A. has worked B. worked C. had worked D. had been working
查看习题详情和答案>>