Lily tried on some new shoes, but she took ______ in the end. They were too expensive.

Let’s paint one side of the paper red, and _____ side black.

 Of all the methods they provided, ________ is of any help for solving the math problem.

He had never envied the rich＿＿＿money．

In his lecture, the professor referred to the belief, in contrast to all other countries, ______ the elderly are wise, ______ is particularly dominant （占优势的） in the Chinese culture．