On the Indonesian island of Sulawesi there is a myth about earthquakes. The islanders say that the world is ＿＿（46）＿＿ on the back of a pig. When the pig's back becomes ＿＿（47）＿＿ , it rubs against a giant palm tree. The world then rolls and shakes, as it ＿＿（48）＿＿ in an earthquake. The pig grunts ＿＿（49）＿＿ happiness as it scratches its back. These grunts are the loud rumbles that can be heard ＿＿（50）＿＿ there is an earthquake.