1) When did your father meet her ? How long ago 2) How long have you they know this famous man? When 3) How long is it since you began swimming in the pool? When 4) How long has she worked this kind of job? when 5) how long ago did you last see Peter? How long has it 6) When did he go to Da nang? How long 7) When did you start to live in the city? How long 8) How long have Robert and Jane been married to? When 9) No one has rented this house before this is the firts time 10 ) You're late again. You're already been late once this week It's the second time