Is Sam an student —Yes, he is _______.

Waiter, $ 20 for dinner, right –I’m afraid $25, sir, for drinks are ________.

Why did you step on my foot? — I am terribly sorryI ____ it.

So seriously _______ in the accident that he was sent to hospital at once.

I’m terribly sorry to have put you to so much trouble.— ________. I know you didn’t mean to.