you should have thanked her before you left.I meant____,but when I was leaving I could

题目

you should have thanked her before you left.I meant____,but when I was leaving I could
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
为什么不能选A?

答案

B,这是动词不定式的省略形式,后面的do sth一起省略,这里必须要用mean to do而不是doing（前者是“打算做某事”,后者“意思是,意味着”,意思不对）句子意思是“你应在走之前感谢她我打算这样做,但是当我要离开时去找...