（），Tom suddenly realized that he had left his wallet at home

来源：百度知道编辑：UC知道时间：2024/07/08 00:15:27

A To wait B Waiting C Having waited
为什么不能选B

B .Waiting 现在分词作状语，表示时间或伴随

选B。汤姆在等候的过程中突然意识到把钱包落在家里了。 Waiting (=While waiting )为现在分词表示伴随情况。

就是选B
这是独立主格结构，省略了一些成分，完整应该是这样的
When Tom was waiting,he suddenly...

C

你是不是少发了点内容啊。。。

（ ），Tom suddenly realized that he had left his wallet at home