1.Many buildings were destroyed by the 1989's earthquake in San Francisco
2.Thousands of people have been killed by natural disasters this year
3.In North America, a strong tropical storm is called a hurricane
4.We can be warned about volcanic eruptions by scientists
5.The weather forecast on TV is being listened by millions of people
6.Tornadoes cannot be predicted long in advance
7 The cause of some natural disasters hasn't been discovered by scientists
# NO COPY CHÚC BẠN HOK TỐT.