问题
选择题
_______ the TV, Tom began to read newspaper.
A． Turned off
B．Turn off
C． To turn off
D． Having turned off
答案
答案：D
题目分析：句意：已经关掉了电视，Tom开始读报。“关掉电视”与“Tom”之间是主动关系，故用现在分词，且现在分词的动作发生在谓语动作之前，故用现在分词的完成时作时间状语，选D。
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