!Hung Hing Community! One important thing to declare, "The owner of this site is not skilled, anything published may be wrong. However, I will be grateful if you point out the mistakes.Thank you!"
There are several sites built by my friends, listed below. You are welcome to visit them.
I have really tried the best. If you are not satisfied, contact me and you will be highly appreciated.
Here, this site includes Dictionary of Idioms, Exercises in Papers and Commom Errors.Hope you will learn something.