问题
选择题
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
答案
B。
此处用现在分词表示结果。又如：It rained heavily, causing severe flooding in that place. 大雨滂沱，造成了那个地方洪水泛滥。