More than two hundred years ago the United States _______ from the British Empire and became an independent country.
If the project ________ by the end of this month is delayed , the company is sure to pay a large sum of money for it .
________ astronauts cannot go to a baseball game or a movie in orbit , there are many familiar activities that they can still enjoy.
--- Is there anything wrong , Tom ? You look upset . ---Oh, nothing . In fact , I ______ the coming National College Entrance Examination
The European Union universities are _______ most attractive because they have ______ diversity of cultures and teaching methods.
--- Thank you for the flowers--- _______ . I thought they might cheer you up .