— Do you plant trees in spring?             —Yes. Many trees          in our cit

— Do you plant trees in spring?             —Yes. Many trees          in our cit

题型:专项题难度:来源:
— Do you plant trees in spring?            
—Yes. Many trees          in our city every year.     [     ]
A. are planting  
B. are planted  
C. were planted
答案
B
举一反三
Last year, Liu Hua, a college student,     to work for the Olympic Games.      [     ]
A. is choosing    
B.is chosen    
C. was choosing    
D. was chosen
题型:专项题难度:| 查看答案
—Look at the sign on the right,            
—Oh, parking _       here.    [     ]
A. doesn"t allow    
B. isn"t allowed  
C. didn"t allow    
D. weren"t allowed
题型:专项题难度:| 查看答案
Attention, please. All mobile phones must       before the meeting starts.   [     ]
A. turn          
B. be turned off              
C. be turning
题型:专项题难度:| 查看答案
We           to close the windows before we left the lab.     [     ]
A. tell      
B. told    
C. are told        
D. were told
题型:专项题难度:| 查看答案
-People find it hard to get across the river.            
-I think at least two bridges          over it.   [     ]
A. need    
B. are needing    
C. will need    
D. are needed
题型:专项题难度:| 查看答案
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