Sort out the characters according 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!
日,生,也,紅( choose the thirth tone):
卡,天,林,尖( choose the thirth tone):
工,也,百,紅( choose the second tone):
千,尖,早,力( choose the thirth tone):