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题目内容
（国家开放大学人文英语）
—You won the first prize in the Physics competition.
—__________________. I made several terrible mistakes.
A.
I think so
B.
You must be joking
C.
You are welcome
—__________________. I made several terrible mistakes.
A.
I think so
B.
You must be joking
C.
You are welcome
参考答案
