单项选择题

Directions:
There are ten short incomplete dialogues between two speakers, each followed by four choices marked A, B, C and D. Choose the answer that appropriately suits the conversational context and best completes the dialogue. Mark your answer on the ANSWER SHEET by drawing with a pencil a short bar across the corresponding letter in the brackets.
Nancy: Have you heard about Dana She is going to get married with Graham.
Scott: ______

A.You’re kidding.
B.Congratulations.
C.Is it a real thing
D.Good luck.