It is to study k.k. again.

I am very glad to find this website, because there is someone to help me, and let me know what is wrong with my English.
 

This will let me to improve.

Today, my friend has taught me that "lat and that" is different.

I have to practice it .

I hope she can understand me next time when I say "that".

Thanks, everyone.

[Good.  You don't have to separate your sentences as in short fragments like you do.]