So happy and so thankful to receive your email all the time, it's useful to me. I think that I have made progress in English by all the ways which you taught me. And, it's unbelievable, but learning English is becoming interesting for me!
I have read this email seriously, and I think I got the meaning completly, in slow speed, as you say, this e-mail is VERY important! Believe me, I will keep on studying English in the future， thanks again!