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    Bill was listening to the radio while Ann TV. A. watched B. was watching C. has watched D. had watched 【查看更多】

     

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    Bill was listening to the radio while Ann ______ TV.      
    [     ]
    A. watched    
    B. was watching    
    C. has watched    
    D. had watched

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    Bill was listening to the radio while Ann ________ TV．

    [　　]

    A．watched

    B．was watching

    C．has watched

    D．had watched

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