No one can be sure _____ in a million years.
We’re living in a society_______exchanging presents is an important part in communication.
The survey __________ our school last month shows that about 2 percent of the students are addicted to Internet games.
Used to TV show, where everything is quick and entertaining, many people do not have the _______ to read a book that requires thinking.
Obama and his officials are trying to ______ the serious problems from the financial crisis.
The employee must have been dismissed by the employer last month, ____ he?