题干
Mike: __________
John: Morning, Mike.
A：Good bye, John.
B：See you, John.
C：Good morning, John.
D：Good afternoon, John.
答案(点此获取答案解析）
C
Mike: __________
John: Morning, Mike.
A：Good bye, John.
B：See you, John.
C：Good morning, John.
D：Good afternoon, John.
