Rewrite the sentence so that the meaning doesn't change meaning: How long is it since you saw Tom? He can't pass the examination. We can't go out because of heavy rain

Rewrite the sentence so that the meaning doesn't change meaning:
1.How long is it since you saw Tom?
When.....................
2. He can't pass the examination.
He wishes...............
3. We can't go out because of heavy rain.
They wish..............
4. They often go to Vung Tau at the weekends.
They used..............
5. How long have you learnt French?
How long ago.............
6. My father started to give up smoking last year.
My father.................
7. They have worked in that factory since 2001.
They started..........
8. I haven't seen her for a long time.
I didn't...................