There is some doubt _______ we can get the first place in the competition.
The computer doesn’t ______ until it is connected to other parts of the system.
Most of the local restaurants were fully booked more than a month ______.
Nowadays, people get news around them and about the world from ______ media: on TV, by radio, in the newspaper or on the Internet.
Less than twenty percent of the employees in their company are women. That is to say, women are in the ______.
Just like fingerprints, each person’s DNA is ______ unless he has a twin.