1、You are a college student now；you should know what to do and what not to do
（你已經是大學生了，應該知道什么該做，什么不該做。）

2、Do you always tell your child what to do and what not to just to 'keep them safe'?
僅僅為了“保證他們的安全”，你是否總是告訴孩子什么該做，什么不該做？

3、How do I know what to do and what not to do?
我怎么知道什么該做，什么不該做？

4、Its no business of ours, we don't tell anyone what to broadcast and what not to broadcast.
這不是我們該管的事情，我們不會教訓任何人什么該播什么不該播。

and what not翻譯