Xi’an is ______ most beautiful tourist city and I believe I’ll come for _______ second time.
We were ______ to learn that he had made a funny and foolish mistake.
I need new heels on these shoes; the present ones are all ______.
He______to a waiter, who got the message and brought the bill.
-Sorry, sir. I didn’t finish the assignment yesterday. -Don’t worry. You ______ hand it in tomorrow.
______ rich knowledge you have, you can’t stop learning, ______ society is always advancing.