Is there a way to show which levels have been completed?

Hello, When i click on the speakers in the dictionary, i expect a voice to say the word, but nothing happens at all. Is there a voice supposed to say these parts ? Thanks

I am completing the levels which is suppose to give me the rewards, however, I am getting nothing! Is anyone else experiencing this glitch in the game? I've done 3 different levels of different difficulties and I don't receive what I am suppose to receive...any help would be nice...

Is there a way to play the game with traditional characters?