- You ought to know by now how much I love you.
- You ought to have told me that before.
- I ought to know, shouldn't I?
- Pete ought to have arrived in London now.
- Jimmy ought to know better at his age.
1. You ought to know by now how much I love you
2.You ought to have taken a holiday
3.They left at nine, so they ought to have arrived by now
4.I said that I ought to do it
5.He ought to get the promotion. He works really hard
