You may not stay worried about your sister, and you probably are not going to do the homework. So I have not yet been sent to Thai-language letter writing lesson here.
You may also be concerns about your sister. And you do not have the strength to do homework. So, I have not submitted a lesson on writing letters to Thailand.
You may have no worries about your sister. And you still don't have the will to do his homework. So I didn't hand writing lessons next Thai characters.