Tim Berners Lee invented World Wide Web in 1991, which _____ everyone to use the Internet
Three fourths of the homework _________ today.
I prefer to stay at home _________ go to see a film.
A great number of reporters _________ to London to report the 30th Olympic Games.
She finds _____ staying at home.
After he had solved the math problem, he _____ to deal with another one.