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—Coach, can I continue with the training?    
—Sorry, you can't  ________ you haven't recovered from the knee injury.     
[     ]
A. until
B. before
C. as
D. unless
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科目:高中英语 来源:同步题 题型:情景交际

     根据对话内容,从下列方框中选择适当的句子补全对话,使对话内容完整、通顺
(其中有两项为多余选项) 。
Check-in Clerk:May I have your ticket, sir?
Edgar:  1.____
Check-in Clerk:I'm sorry. This is a Coach Class ticket. This is the Business Class check-in.
Edgar:  2._____ .
Check-in Clerk: Flight CA 489 to Vancouver?   3._____
Edgar: Oh, no! I have to be on it.
Check-in Clerk: Just a moment. Yes, you're OK.   4._____
Edgar: Thank goodness for that.
Check-in Clerk: Do you have any baggage?
Edgar: Yes. Two pieces.
Check-in Clerk:   5.____
Edgar: Yes, I did.
Check-in Clerk: Fine. Put them on the scales.
A. Here you are.
B. You'd better hurry.
C. I can check you in here.
D. But my flight's just leaving.
E. I think you're too late.
F. Did you bring your passport, please?
G. Did you pack the bags yourself?

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