1)There have been many earthquakes in California.
2)I have been working as a teacher for 30 years.
3)I have been living here since 1960.
4)He has been painting the house for 5 hours.
5)Yes,there has been a war in the United State
6)What have you been doing for all this time
7)I have been working as a fireman sinse 2000.
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