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题目
题型:同步题难度:来源:
The zookeeper is worried because the number of visitors      smaller and smaller.   [     ]
A. become    
B .became  
C. is becoming  
D. have become
答案
C
核心考点
试题【The zookeeper is worried because the number of visitors      smaller and smaller】;主要考察你对现在进行时等知识点的理解。[详细]
举一反三
It"s eight o"clock Henry _____ the phone. [     ]
A. talks on          
B. talks in
C. is talking on      
D. is talking in
题型:同步题难度:| 查看答案
—What are you doing?
—I _____ a letter to my pen pal. [     ]
A. write              
B. am writing
C. writes              
D. am write
题型:同步题难度:| 查看答案
The twins are _____. They aren"t _____.[     ]
A. swim; run          
B. swimming; run
C. swimming; running    
D. swim; running"
题型:同步题难度:| 查看答案
—Where"s Li Hua?
—Look ! He _____ tennis on the playground.[     ]
A. plays            
B. played .
C. was playing      
D. is playing
题型:同步题难度:| 查看答案
—What"s your father doing now?
—He _____ the room.[     ]
A. cleaned          
B. cleans
C. has cleaned        
D. is cleaning
题型:同步题难度:| 查看答案
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