阅读下面的对话，根据对话内容补上所缺的句子，使对话意思完整．

A：Hi, Tom．You were not here yesterday afternoon．　　1　　?

B：　　2　　．

A：　　3　　．How are you feeling now?

B：Much better．The fever is gone, but I still cough and I feel weak．

A：Did you see the doctor?

B：Yes, I went to the doctor’s yesterday afternoon．The doctor gave me some medicine and asked me to 　　4　　．

A：Why don’t you stay at home today?

B：Because I’m afraid I’ll miss too many lessons and I’ll be left behind．

A：Don’t worry．Take care of yourself．　　5　　．

B：Thank you．