第一节One possible version:Dear Ryan,I'm writing to apologize for not being ableto attend tthe English Conversation Salon thisweek.A close relative is visiting from out oftown unexpectedly,and I need to help witharrangements during his siay,so I won't be ableto join the salon as planned.I'm truly ssorry to missthis chance topractice speaking and join the discussion.I reallyvalueyourguidanceandthelearningenvironment you provide,and I will do my bestto catch up on anything i miss.Thank you for your understanding.I'mlooking forward to attending the next salon.Yours,Li Hua