こんな、動物に挑戦 何個も、風船を割るも ついに出来上がり Riddles Dog A dog was tied to a 15-feet rope, but he walked 30 feet. How come? （1foot=30cm、feetは、footの複数形） 答えは、写真の後に 答 The rope wasn't tied to anything. (feetはfoo…