____ from endness homework on weekends,the students now find their own activities ,such as talking a ride together to wa
问题描述：
____ from endness homework on weekends,the students now find their own activities ,such as talking a ride together to watch the sunrise.
A.free B.freeing C .to free D.having freed
答
选D解析如下：D选项是现在分词的完成式,它主要用在状语中,表示这个动作发生在谓语动作之前.此句状语中的逻辑主语是主句主语"the students",故不定式或现在分词可选,又因状语中的动作发生在主语谓语动作之前,所以用现...