

すぐに警察を呼んでください!
財布をなくしたので、警察に行きました。
警察の電話番号は何番ですか。
"けいさつ(警察)" is in the lesson "Ask for help" (Level 41), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.