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题目
题型:同步题难度:来源:
-I wonder how much you charge for your services.
-The first two are free____________ the third costs $ 30.    [     ]
A. while      
B. until          
C. when          
D. before
答案
A
核心考点
试题【-I wonder how much you charge for your services.-The first two are free_________】;主要考察你对连词等知识点的理解。[详细]
举一反三
Adults are usually easy to ignore some common things __________little children tend to notice them.   [     ]
A. when        
B. while      
C. as        
D. though
题型:同步题难度:| 查看答案
Mary was on the point of leaving the room ___________the telephone rang.[     ]
A. when        
B. while      
C. as        
D. but
题型:同步题难度:| 查看答案
Work hard________ you will succeed.   [     ]
A. and            
B. so            
C. or              
D. or not
题型:同步题难度:| 查看答案
Do come on time this evening, _________you will miss theperformance.    [     ]
A. and          
B.or            
C. so            
D. but
题型:同步题难度:| 查看答案
You have failed two tests. You"d better start working har-   der,________you won"t pass the course.      [     ]

A. and            
B. so            
C. but            
D. or

题型:同步题难度:| 查看答案
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