【題目】________in her office for nearly 20 hours, she is going home to have a rest.

A. To work B. Working

C. To have worked D. Having worked

【答案】D

【解析】考查分詞。句意：在她的辦公室里工作了將近20個小時后，她要回家休息了。逗號之前是句子狀語，其中work與其邏輯主語（主句主語）she之間是主動關(guān)系，并且根據(jù)句子意思可知狀語動作發(fā)生在主句動作之前，用having done作狀語。故選D.

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