47．-David, turn off the TV no one is watching it． -But it off already!The music is from the radio． A. so that , has been turned B．when．has turned C．if．has been turned D．because, has turned 答案:C 【查看更多】

 

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－David, turn off the TV ________ no one is watching it．

－But it ________ off already!The music is from the radio．

[　　]

A．so that, has been turned

B．when．has turned

C．if．has been turned

D．because, has turned

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