You must learn to obey instructions. ✬

All you have to do is to obey my orders. ✬

We should obey our parents. ✬

You should obey the traffic laws when you drive. ✬

You don't have to obey such a law. ✬

I refuse to obey you any longer. ✬

You should obey your parents. ✬

You have to obey your parents. ✬

We should obey the traffic rules. ✬

You should obey the traffic rules. ✬