—I’ve decided to quit this job, but I’m afraid I won’t be able to find a better one.— . You never know until you try.
A big crowd gathered _____ him ______.
______ is known to us all, China has its own English language newspaper.
It is difficult for any of us to eat better, exercise more, and sleep enough, ________we know we should.
The computer is ________ to be one of the greatest inventions of the 20th century.
--We________ in advance. Look, this restaurant is almost empty. --Yes, just in case.