Thank you for sending the papers. I will read and try to understand them carefully.
Thank you for your time to talk with me yesterday. I really appreciate you help and kindness.
I am very sorry for what I said yesterday. I was very nervous and anxious. I am not used to have an English conversation on Skype. But I will try to get used to it.
I will try my best in preparing myself for the examination.
I am working on thinking of the questions that the committee may ask me in the examination. I will send it to you to check soon.