Read the text and choose the correct option from the four given.

Now streets of a modern city are ... than in the past because everybody uses public transport. Cities became ... and it’s ... to use public transport than walk in the street. But the streets of London in 1666 were much narrower ... now. And the buildings then were ... . People used wood for building. Now we mostly use concrete or bricks because they are ... than wood. Modern technology has made building much ... and ... . So now we can build ... and ... buildings.