Dear Thai
It was great to hear from you. I hope all is well. Today, I’m writing this letter to respond to you.
Firstly, have you felt better yet? I hope you will be fine soon. Sometimes, I’m also sick, so I really know your feeling. It does not only make you tired but also bored while only staying in bed. Nevertheless, everything will be fine in the next couple of days.
Secondly, I’ll suggest some things you play at this time. Watching television is also a way to kill time, I recommend some channels that you should see that VTV4 news, Khanh Vy channel. Those not only provide your knowledge but also improve English skills. Other activities as listening to music, confiding with someone are also useful to work you should take to keep your mind comfortable. The most important thing does not do any heavy activities so that ill will pass soon.
I’m looking forward to hearing from you. I hope you’ll be ok as soon as.
Best wishes, 
Dear Thai
It was great to hear from you. I hope all is well.  
Today
, I’m writing this letter to respond to you. 
Firstly
, have you felt better  
yet
? I hope you will be fine  
soon
.  
Sometimes
, I’m  
also
 sick,  
so
 I  
really
 know your feeling. It does not  
only
  make
 you tired  
but
  also
 bored while  
only
 staying in bed.  
Nevertheless
, everything will be fine in the  
next
 couple of days. 
Secondly
, I’ll suggest  
some
 things you play at this time. Watching television is  
also
 a way to kill time, I recommend  
some
 channels that you should  
see
 that VTV4 news,  
Khanh
  Vy
 channel. Those not  
only
 provide your knowledge  
but
  also
  improve
 English  
skills
. Other activities as listening to music, confiding with someone  
are
  also
 useful to work you should take to  
keep
 your mind comfortable. The most  
important
 thing does not do any heavy activities  
so
 that ill will pass  
soon
.
I’m looking forward to hearing from you. I hope you’ll be ok as  
soon
 as.
Best wishes,