9, We haven't seen each other for over two years.

⇒ The last time we saw each other was over two years ago.

10, That's the strangest film I've ever seen.

⇒ I have never seen a stranger film than this one before

11, The last time we met each other was ten years ago.

⇒ We haven't met each other for ten years .

12, Have you ever played a computer game before ?

⇒ Is this the first time you have ever played a computer game ?

13, I haven't spoken to her for 3 years.

$9.$ We haven't seen each other for over two years$.$

-> The last time we saw each other was two years ago$.$ 

$10.$ That's the strangest film I've ever seen$.$

-> I have never seen a stranger film than this one before$.$

$11.$ The last time we met each other was ten years ago

-> We haven't met each other for ten years$.$

$12.$ Have you ever played a computer game before?
-> Is this the first time you have played a computer game?

$13$. 1. It's three years since I last spoke to her.

-> I haven't spoken to her for three years$.$