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补全对话
56、――＿＿＿＿．―――What's the matter7 ．
A． Hello!
B． Is that Tom speaking?
C． Help!
D． Excuse m

57、――What's the problem with your bike? ――＿＿＿＿
A． Not at al
B． Good，thank yo
C． Nothing seriou
D． Sur

58、―――I feel sick，doctor．――＿＿＿＿．　
―――I'm not sure，but I have got a bad headache．
A． How long have you been sick?
B． I'm sorry to hear tha
C． How are you feeling now?
D． Do you have a fever?

59、――Never thought I could see you here! ――＿＿＿＿
A． So did I
B． Ohaven't you?
C． Gladto meet you
D． It's a small worl

60、――It's late．I'd like to say goodbye．――＿＿＿＿
A． Please stay more a whil
B． That's all righ
C． Hope you have a good timSee you tomorro
D． I'll miss yo