

二つの会社が新しいスマホの売り上げを競っています。
子どもたちは誰が一番速く走れるか競いました。
友達と点数を競うのは楽しいですか。
"きそう(競う)" is in the lesson "Verbs 5" (Level 17), 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.