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Having checked the doors were closed,and__all the lights wer

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Having checked the doors were closed,and__all the lights were off……
Having checked the doors were closed,and__all the lights were off,the boy opended the door to his bedroom.
A.why
B.that
C .when
D.where
为什么选B呢 不选其他
Having checked the doors were closed,and__all the lights wer
选B
因为all the lights were off不缺成分
而且and前后语序等是一致的 前面说:已经检查了门已经锁了 后面就应该接着:而且所有灯都关了
这里面不用问问题 不用问为什么关、什么时候关、哪里关
再问: 从结构上分析一下为什么是错的?
再答: and前后语序、时态都是一致的....前面叙述后面也是叙述..................... 结构上也就这样解释=-=
再问: http://zhidao.baidu.com/question/229656384.html 她解释对吗?
再答: 她解释的不对 having checked不能分开解释
再问: 你说“因为all the lights were off不缺成分”,那that 是引导什么从句?
再答: Having checked (that) the doors were closed,and that all the lights were off 引导宾语从句