By the middle of the 21st century, the vast majority of the world's population __________ in cities rather than in the country.
As is known to all, the financial crisis firstly broke out in the United States, __________ the group of developed countries.
—How does a simple meal like this cost so much? —We have __________ in your bill the cost of the teapot you broke just.
__________ I know, the computer can never take the place of the human brain.
—How much do you know about the 3D film technology? —A little. Not until __________ the hot movie Avatar __________ some about it
She has not any close relatives, __________ her nephew who went and settled abroad 5 years ago.