

砂糖が溶けるまで、よく混ぜてください。
暑くて、アイスコーヒーの氷がすぐ溶けてしまいました。
このココアの粉は冷たい牛乳にも溶けますか。
"とける(溶ける)" is in the lesson "Drinks" (Level 40), 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.