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1.She has been a teacher for 3 years 2.she has been a teacher since 2002 3.she was a teacher in 2002 4.she will be a teacher next year 5.he has known them for 2 months 6.they have had this car for 5 years 7.I have been living here since 2001 8.I lived here in 2001 9.we have known her for many years