https://online1.tingclass.net/lesson/shi0529/0000/458/340.mp3
https://image.tingclass.net/statics/js/2012
Unit 340
Why aren't you eating?
I am on the diet.
I am tasting/eating sth.
icecream cone, drool
She is drooling.
To be on the diet; to go on the diet
I'm on the diet for my health.
Because I'm overweight, I decided to go on the diet.