what is wrong with them and why ?

Question

1- I am living in Italy since 3 years
2- I have gone to Egypt last month
3- Why you are laughing at me?
4- Despite it was raining, we ate outdoors.
5- Rome is more big than Milan
6- Excuse me, can you tell me the street to the town centre?
7- I live on the fifth floor of a palace in central Tbilisi.

Answer 1

1) I have been living in Italy for 3 years.

2) I went to Egypt last month.

3) Why are you laughing at me?

4) We ate outdoors even though it was raining.

5) Rome is bigger than Milan.

6) Excuse me, can you tell how to get to the Town Center?

7) looks correct