Today,none of these wrong things are deep embarrassment they should be.请问they前面有没有少什么介词

问题描述:

Today,none of these wrong things are deep embarrassment they should be.请问they前面有没有少什么介词
或连词?

Today,none of these wrong things are deep embarrassment ((that) they should be)[后置定语从句].
that通常可以省略.