꼑 if only : often introduces a wish, or indicates an unfulfilled condition, esp. in exclamation.
If only he arrives in time!
If only she would marry me!
If only she had known about it (but she did not know)!
over and Over (again) : repeatedly, many times
I…ve warned you over and over again not to do that.
have got to : must, be compelled or obliged to
It has got to (=must) be done today.
She has got to work hard for her living.
You haven…t got to (=needn…t) go to the office today, have you?