With the door closed all day long, the headmaster on the plan for the new term. He hasn`t had his supper yet. A works B. was working C. has been working D. has worked 查看更多

 

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With the door closed all day long, the headmaster________ on the plan for the new term. He hasn`t had his supper yet.
    A works     B. was working     C. has been working       D. has worked

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