

父はビジネスで東京に行きます。
ビジネスの本を読んでいます。
将来、自分のビジネスを始めたいですか。
"ビジネス" is in the lesson "Business 1" (Level 33), along with 12 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.