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    What are the boys doing in the river? They . A. are swiming B. are swimming C. swimming D. are swim 比一比.看谁最聪明? 【查看更多】

     

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    —What are the boys doing in the river?—

    They ________.

    A.are swiming　　　　　　　　　　　　　　　　　　B.are swimming

    C.swimming　　　　　　　　　　　　　　　　　　 D.are swim

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    --What are the boys doing in the river?　　

    -- They ______.　　

    A. are swiming　 B. are swimming　 C. swimming　 D. are swim

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    1. Who _____ over there now?    
    [     ]
    A. singing  
    B. are sing  
    C. is singing  
    D. is sing
    2. It’s 8 o’clock. The students _________ an English class.  
    [     ]
    A. have  
    B. having  
    C. is having  
    D. are having
    3. Listen! The baby _______ in the room.  
    [     ]
    A. crying  
    B. cried  
    C. is crying  
    D. cries
    4. Look! Lily and Lucy ________ photos.
    [      ]
    A. are take  
    B. is taking  
    C. taking  
    D. are taking
    5. What are the boys doing in the river? They ______.     
    [     ]
    A. are swiming  
    B. are swimming    
    C. swimming  
    D. are swim

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