what could be so important that he didn't even see me sit next to him?

问题描述:

what could be so important that he didn't even see me sit next to him?

什么事情这么重要以至于我坐在他旁边他都没有看见我?

什么会如此重要(比较吸引他的注意力)以至于我坐在他旁边他都没看到?