【高中·完形填空·City Lights】
阅读下面短文，从各题所给的四个选项中选出可以填入空白处的最佳选项。

From the hill above the town you can see the whole city. Cars move like slow rivers of light; windows switch on one by one as the sky darkens.
Looked at from here, the city seems calm. But each light is a separate life: someone cooking, someone arguing, someone sitting alone with a decision they have not yet made.
This is the strange thing about cities. They put millions of lives side by side and yet remain almost ______. We can live in the same building for years without knowing the name of the person next door.
Perhaps that is why we climb hills — not to see the lights, but to remember that behind every one of them there is a life as full and complicated as our own.

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