She is an excellent student in our class, and she always herself in her studies.
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 knowwe 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.