单项选择题
I have an appointment with Dr. Johnson. --（）
A.The appointment is put off B.You look sick and weak C.Please wait for minute. He is busy now D.Tell me your ID number
单项选择题 I think the Internet is very helpful. --（）
单项选择题 -- I think the Internet is very helpful.--（）
单项选择题 — Would you like to see the menu? —（）
