Question

It ------- a big city with historical monuments.

is


will be


were


are​

Answer 1

Answer: is

Explanation:

Answer 2

It is a big city with historical monuments.

The word 'is' was used as 'will be' is in future tense and 'were' and 'are' are plural.

So, 'is' is best word that can be used.

Hope it will help you...