No sooner at the desk than the telephone rang. A. had he sat down B. did he sat down C. ——青夏教育精英家教网—

摘要： No sooner at the desk than the telephone rang. A. had he sat down B. did he sat down C. he had sat down D. he sat down

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No sooner ________ at the desk ________ the telephone rang．

had he sat down; than

did he sat down; than

had he sat down; when

he sat down; when

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