1 what should be done is,（主语从句）
2 what should be done is,（主语从句）单复数问题
3 what I should do is,（主语从句）大小写问题
4 I don't know what has happened （宾语从句）
5 I don't know what should be taken （宾语从句）what things 搭配很生硬 可以去掉things
6 I guess what Tony want to get is,（宾语从句）人名大小写
7 I don't know which +抽象名词 is right （宾语从句）which是“哪一个”,单用要结合语境吧~不清楚
8 I don't know which decision is right （宾语从句） 单复数和搭配问题 直接用which decision或者which one
9 The way we should choose is the first one （主语从句） 序数词要加the 然后which way引导主宾从句,不清楚唉.
10 I think the way we should choose is the first one （宾语从句）
这个是主宾从句找例子吗,直接百度一些地道的句子学习,自己套用固定表达学习或者讲解比较费力不讨好.