The whole world __________ at the accident of 911 happened in America.

问题描述:

The whole world __________ at the accident of 911 happened in America.
A. was astonished B. were astonished
C. was astonishing D. were astonishing
为什么用单数,全世界的人震惊,应该用复数啊?

the whole world 看作一个整体,所以用单数