Hard _____ he tried, he failed to catch up with the first runner.
9. No bird and no beast _____ in the lonely island.
8. The results of the examination _____ that you have all made great _____ .
7. No one but her parents _____ it.
6. The Olympic Games _____ held every _____ years.
5. About 40 _____ of the population of that country _____ on farms.