Question

— Did you go to the exhibition on May 18th?
— Of course. There were many kinds of Taiwan fruits ______.
A. on show                  B. on duty                     C. on business

Answer 1

A

on show 在展出；on duty值班，上班；on business出差。句意：你去看了五月十八日的展覽嗎？——當然了。有許多種臺灣水果參展了。結合語境可知選A。
點評：解答此類題型的要點是了解各個短語的基本含義及用法的不同，同時注意其表示多個含義的現象，然后結合語境選擇合適答案。