---What’s the chief ______ of the world this year?
---I think the Twin- Tower was destroyed.
A. business B. matter C. event D. affair
---What’s the chief ______ of the world this year?
---I think the Twin- Tower was destroyed.
A. business B. matter C. event D. affair
C
event 表示比较重要的事件；business表示一般性的事物，如经营方面的事情或生意等，也可以构成一定的短语，如on business, get down to business 等。matter指一般的需要解决的事情;affair指重大的国际、国内事物，经常用复数。