We cannot stop earthquakes, but we can do things to make sure they do not destroy all the cities. First, it is not a ___1___ idea to build houses along the lines where ___2___ of the earth’s places join together. Second, If you think there ___3___ be an earthquake, it is better to build houses on rock, not on ___4___. Third, you must make the houses as ___5___ as possible. Weak buildings will fall down in an earthquake, but strong ones may ___6___. Scientist are ___7___ that one day an even bigger earthquake will hit the part around San Francisco, they call it“the Big One”. However, people today are still building more ___8___. The population in and around San Francisco is ___9___ ten times more than it was in 1906. This means that ___10___ there is another earthquake, a great many houses and buildings will be destroyed.