Вставь артикль(a/the)там,где необходимо.this is____my friend lulu

This is my friend Lulu. She is a friend of mine.

The sky is blue.

This is a green plate. The plate is on a table.

This is the moon.

We have seen a fox in the Zoo.

There is a river near my village.

The USA is one of the largest countries in the world.