hard all day I fell fast asleep. A. WorkingB. Having worked C. WorkedD. To work

问题补充：

hard all day, I fell fast asleep.

A. Working

B. Having worked

C. Worked

D. To work

答案：

A. Working

(答案→)B. Having worked

C. Worked

D. To work

解析：句意：辛辛苦苦干了一天的工作。我很快就睡着了。Working表动作同时同时进行；Having worked表动作在先；Worked表被动；To work表将来。结合句意是，work动作在先，故选B。

考点: 考查非谓语动词的用法。

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