6. It is a long time since she last saw her parents.

= She hasn’t seen her parents for a long time.
7. When did you begin reading this book?

= How long have you read this book?
8. This is the first time I have been abroad.

= I haven’t been abroad before
9 I haven’t gone to the zoo since last year.

= The last time I went to the zoo was last year
10. I haven’t met my aunt since I was 10 years old.
= I last met my aunt when I was 10 years old.