根据对话内容，从方框内选择恰当的句子填入对话相应的空白处，使对话完整，合乎情景(有两个多余选项)。
A：Hello，Mike! What's the time?
B：(1) ______________________________
A：Where’s Bob? I can't find him.
B：I don't think he can come.
A：(2) ______________________________
B：He has to look after his sister.
A：(3) ______________________________
B：She doesn't feel well.
A：(4) ______________________________Did she go to see the doctor?
B：Yes．
A：(5) ______________________________
B：The doctor said nothing serious，but she has to rest.

A. Why can't he come? B. I'm sorry to hear that. C. Where did the doctor go? D. It's half past eight. E. What did the doctor say? F. I'm glad to hear that. G. What’s wrong with his sister?