I
⑴Hello, Mike.
⑵Good morning.
⑶Good afternoon, class.
⑷Hi, I'm Wang Bing.
⑸Goodbye.
II
A.Good afternoon, Miss Wang.
B.Hello, Nancy.
C.Hi, I'm Liu Tao.
D.Goodbye.
E.Good morning.
A. Good morning, Mike.
B. Hi, Sam.
C. Good afternoon, Bobby.
D. Hello, I'm Mike.
—
—Good afternoon, Mike.