题干
When you can't hear clearly. What should you say? __________
A：I don't know the word in English.
B：Where have you been?
C：I beg your pardon.
答案(点此获取答案解析）
C
When you can't hear clearly. What should you say? __________
A：I don't know the word in English.
B：Where have you been?
C：I beg your pardon.
