Помогите розставить артикль? streets in ... American cities, instead of having ... names, are numbered, and so when one has once understood ... plan of .. American city, it is very easy to find ones way from one part of it to ... other.

Streets in American cities, instead of having names, arenumbered, and so when one has once understood the plan of a Americancity, it is very easy to find ones way from one part of it to another.