 
 <translate> Echo is a resound that is heard in large empty halls. Gymnasium can be in a large empty hall. So, the answer is gymnasium. <ibo> Ụda olu bụ mkpọtụ a na-anụ n'ime nnukwu ụlọ ndị tọgbọ chakoo. Ụlọ mgbatị ahụ pụrụ ịdị n'otu nnukwu ụlọ nzukọ tọgbọ chakoo. Ya mere, azịza ya bụ ebe a na-emega ahụ. 