6/ I have married for 10 years.

-> I started marrying 10 years ago.

7/ How long have she lived in Danang?

-> When did she start living in Danang?

8/ He hasn’t smoked for 2 years.

-> He last smoked 2 years ago.

-> The last time he smoked was 2 years ago.

-> It is 2 years since he last smoked.

9/ I have learnt French for 3 years.

-> I began learning French 3 years ago.

10/ I haven’t met her for 5 days.

-> I last met her 5 days ago.

-> It is 5 days since I last met her.

-> The last time I met her was 5 days ago.