1. Over 57 million students ….. in American schools which range from kindergartens to high schools.
has been enrolled
2. This situation is serious. Something must ….. before it’s too late.
3. America’s first college, Harvard, ….. in Massachusetts in 1636.
is being founded
had been founded
4. The book ….. by Hardy.
5. Football ….. for hundred of years.
has been played
6. A prize ….. to whoever solves this equation.
7. The university of Michigan is one of the best universities in the United States and it ….. in Ann Arbor.
8. This dictionary ….. a week ago.
9. Two men tried to sell a painting that ….. .
had been stolen
10. He ….. the girl’s name now.
11. A new book ….. by that company next year.
will be published
12. Everybody ….. by the terrible news yesterday.
13. When I came to the party, John ….. home.