Using the present perfect to rewrite the sentences: It is more than two decades since the internet was invented. It started raining a week ago. This is the first time i have gone shrimping

Using the present perfect to rewrite the sentences:
1. It is more than two decades since the internet was invented
--->
2. It started raining a week ago
--->
3. This is the first time i have gone shrimping
--->
4. The baby has never cried at night before
--->
5. It is three seasons since the bus was serviced
--->
6. This is the first time i have tried Hue pancakes
--->
7. We all began to share the apartment some years ago
--->
8. The grandson has never seen a lion before
--->
Ex: It is ten years since Tam left his homeland
---> Tam has left his homeland for ten years

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