You are as concerned about your sister, and you probably are not going to do the homework. So I sent the Thai language lessons to you today. I want you to stay a concern before then I will send you the next lesson to later!
You're worried about your sister. And you do not have the strength to do homework. So, I did not send word to you in Thailand today. I want you to relax before the next lesson, I will come to later.
You are worried about your sister. And you still don't have the will to do his homework. So I don't send Thai lessons for you today. I want to give you relief, then I will send the next lesson for later.