We had lunch in a restaurant by the river.
Correct
She opened a window in the kitchen.
Correct
Is there an supermarket near here?
Is there a supermarket near here?
There is an armchair in the living room.
Correct
I want to see the Big Ben when I go to London.
Correct
The museum is next to the park.
Correct
They bought an sofa for their living room.
They bought a sofa for their living room.
We visited an Eiffel Tower last summer.
We visited the Eiffel Tower last summer.
I live in a small house with the garden.
I live in a small house with a garden.