Sort out the characters according to their tones.

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
刀 位 唱 草 (choose the first tone)
象 李 比 呀 (choose the fourth tone)
走 李 叫 巴 (choose the firsr tone)
笑 他 地 了 (choose the first tone)