Question

Completa la oración con el adverbio correcto. Usa cerca de, alrededor, enfrente de, detrás de, debajo o afuera.
Hay varios taxis _______ del centro.

Answer 1

In this question there are two possible answers. But first I'll explain you why did I discharge the other ones.
Cerca de, Enfrente de, Detrás de... Because of the "de" I discharged it, since the sentence already uses "del".

Debajo... This one is obvious since we are talking about taxis I guess we are also taking about the center of a city so "under" is not an option.

Answer 2

So now we have left "alrededor" and "afuera", both are possible but in my opinion the one that is correct is alrededor.

Answer 3

I hope it helped if you got more questions tell me and I'll help you :)