【题目】The glass doors have taken the place of the wooden ones at the entrance, ______ in the natural light during the day.
A. to let B. letting C. let D. having let
在线课程【答案】B
【解析】
试题分析:考查非谓语。根据句子结构,空格处应用非谓语动词形式。句子的主语the glass doors与动词let的关系可判断出是主动关系,要用letting作状语,表示“玻璃门可以使自然光线从玻璃门照进来”,所以选B项。