—Tom, you should avoid____ late for class.—I' m sorry. I won' t be late again.
The manager was worried about the press conference his assistant _______in his place, but luckily, everything was going on smoothly.
—So you gave her your phone? —_______. She said she’d return it to me when she could afford her own.
—Do you know who knocked at our door last night, the postman? —It _______ him. It was only 5 o’clock.
It is said the Great Wall_______ the Warring States, is _______worth visiting.
I have _______ my father again and again not to smoke, but I can’t ______ him.