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J'écris juste ce que je te suggère de corriger.
I have chosen to talk about .....
... is the biggest city in the United States ...
.. five districts (pluriel) .... which are ...
...most populous city ..... States (S majuscule)
I have chosen to talk about this city because I spent one month there last year .
building (tu as omis le "i")
I would take the subway. but I did not like it. This is the reason why New Yorkese'd rather take cabs
The second thing (singulier) I really like to do is eating.
Not so expensive restaurants.
The Empire State Building (majuscule et rajouter le i de building)
remains (et non pas stay)
were illuminated (tu as choisi le passé dans ton texte)
My stay in New York will remain the best holidays I ever spent.
Holidays (un seul "l")
All kinds (pluriel)