proszę o szybką pomoc w transformacji zdan !

mam niedługo egzamin i potrzebne mi są dobrze przetransformowane zdania :
1. I haven't been to Paris before. (FIRST )
It's the FIRST time I've been to Paris.

2. We haven't been swimming for ages. (SINCE)
It's (been) ages SINCE I (last) swam.

3.Mary started learning French 5 years ago. (HAS)
Mary HAS been learning French for 5 years.

4. I'm on the 10th page of this letter I'm writting (TEN)
So far I have read TEN pages of this letter. [choć to mi nie pasuje, bo jeżeli ktoś jest na 10. stronie, to przeczytał 9 stron, ale mniejsza o to xD]

5. It's over 20 years since they get married (FOR)
They have been married FOR 20 years.

6. there's definite improvement in your work (HAS)
Lately your work HAS improved definitely.

7.This is my 2nd visit to Hungary. (visited)
This is the second time I've visited Hungary.

6. there's definite improvement in your work (HAS)
Lately your work HAS improved definitely.

mam niedługo egzamin i potrzebne mi są dobrze przetransformowane zdania :
1. I haven't been to Paris before. (FIRST )
It's the first time that I've been in Paris . <- ??