You should sleep.
If I should be suddenly spoken to in English, I might run away.
The relationship between husband and wife should be based on love.
Needless to say, fundamental human rights should be respected.
If your company primarily does business with America, then you should be studying English with a native speaker from America.
Tom is taking a walk with Mary and should be back before long.
Tom agrees that Mary should do most of the driving on their upcoming trip.
Spending time with your significant other should be high on your priority list.
You don't have to study all day. You should go out and have some fun.
Don't come to me now with that. You should have said something when it originally happened.
Should I put this bag in the overhead compartment?
A man should not be judged by his station in life.
Before you go hiking in the woods, find out what you should do when you meet a bear.
The first word of every sentence should be capitalized.
What should we do with people who are very sick or hurt and can't get better?