题目内容

17.17.Great changes have taken place in Wei Hua's school since略.
A.one year ago                   
B.two years ago                
C.three years ago                
18.The students in Wei Hua's class first略.
A.teach themselves                           
B.ask some questions                 
C.take important notes
19.Many students like略because they can help each other in class.
A.doing sports          
B.studying in groups                   
C.singing songs     
20.The students in Wei Hua's school are略all of the activities.
A.angry about                  
B.afraid of               
C.interested in.

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