—Do you know where the headmaster is? I have something urgent.
　　　　—Oh, he ____ have gone far, for the computer is still on in the office.

— I didn't tell my parents the secret yesterday.
— But you ______.

Had we assisted him , he ________ us a hand ________ today .

--- I borrowed 10 dollars from Cathy, but she insisted that I borrowed 15 dollars from her.
--- I ______ you the money. Why didn’t you ask me?

--- It is strange that he ______ come so late.
--- Something unexpected must have happened to him.

— No wonder you caught a cold. You _____ out last night without a coat.
— I know how silly I was.

If you think the price of pork is too high, you _____ as well buy some beef. It depends on you!

I have told you the truth.          I keep repeating it?

He is not native, if he were, we _______ this discussion over his identity.

We apologize for any inconvenience you _______ have been caused by the delay of the flight.