请教一题高三英语题:)

问题描述:

请教一题高三英语题:)
---You should have thanked her before you left.
---I meant _________ ,but when I was leaving I couldn't find
her anywhere.
A to do
B to
C doing
D doing so

B(楼上的说得是对的但我想他看错选项了)
这里mean是打算的意思,其后面接不定式是这个意思,接动名词时候是意味着的意思.根据上下文这里是打算的意思,所以选B.