--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
答案:B
题目分析:此处meant to do sth意为:本打算做某事,结果却没做。这里是不定式的省略。句意:——你应该走之前向她表示感谢。——我本打算那么做,可是我离开的时候,我找不到她。根据句意及语法选B。