On receiving the assignment, we at once. A. set about working B. set out to work C. g——青夏教育精英家教网—

摘要： On receiving the assignment, we at once. A. set about working B. set out to work C. got down to working D. All the above

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On receiving the assignment (指令), we 　　　　 at once.

A. set about working　 B. set out to work C. got down to working D. All the above

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