______ that she was going off to sleep,I asked if she’d like that little doll on her bed.

问题描述:

______ that she was going off to sleep,I asked if she’d like that little doll on her bed.
A.Seeing B.To see
C.See D.Seen
为什么选A

A.Seeing
Seeing 这里是一个现在分词,做状语,相当于引导一个时间状语从句,= when I saw that she was going .类似的用法很多,再如:
Hearing the news,she started to crying.
这句话的意思:我看到他就要睡着了,我就问她是否喜欢床上的那个小布娃娃.