Помогите дополнить предложения,упр 5

1.How long have you lived here
2.How long have you been here
3.How long has she worked there
4.How long have you had it
5.How long have they know each other
6. How long has he been with his company

How long have you lived here
How long have you been here
How long have you worked there
How long have you had it
How long have you known each other
How long have you been with his company