Hello, dear Mr. Thompson. I hope, you remember me, my name is Anastassia, I 
had 
studied in your Unnecessary verb
apply
English
 course for 3 years Use synonyms
couple
 of years ago. 
First of all, let me please, express to you my sincere admiration for your work, you Correct article usage
a couple
was
 the best Change the verb form
were
English
 teacher I have ever had. After your course I'm really Use synonyms
confidence
 with my Replace the word
confident
English
, Use synonyms
moreover
, people are asking me to teach their children. 
I'm writing Linking Words
this
 letter with the purpose of asking to get some study books from you. One of my friends asked me to help Linking Words
to 
his children with their Change preposition
apply
English
 classes. They are 10 years old, and I'm really not sure what kind of books I need for these sessions. 
I know that you were Use synonyms
the
 school teacher in the past, so maybe you can Correct article usage
a
advice
 me Replace the word
advise
the
 books I need, Change preposition
on the
furthermore
, I'll be happy to Linking Words
boorow
 them from you Correct your spelling
borrow
to
 the period I need to buy them. I desperately have to get Change preposition
for
this
 workLinking Words
, so
, it Add a missing verb
done, so
will
 be great if you Wrong verb form
would
can
 help me. 
Looking forward to hearing from you.
Best regards, Anastassia.Wrong verb form
could