阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
Earthquakes are something       people fear. There are some places that have few or no earthquakes.   , most places in the world have them regularly.      (country) that have a lot of earthquakes are usually quite mountainous.
The most talked about earthquake in the United States was in San Francisco in 1906. Over 700      (frighten) people died and numerous citizens      (suffer) from it. The strongest one in North America was in 1964. It happened in Alaska.
Strong earthquakes are not always the ones that kill the most people. In 1755, one of the strongest earthquakes ever recorded     (feel) in Portugal. Around 2,000 people died.
In 1923, a very strong earthquake hit the Tokyo, Yokohama area of Japan. A hundred and forty thousand people died, most of     died in fires which followed the earthquake.
One of the worst earthquakes ever was in China in 1976. It killed    number of people. The worst earthquake ever      (record) was also in China,       which 400,000 people were killed or injured. This earthquake happened in 1556.