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— David, turn off your computer now! You     play on it too long. — I see, mum.A. couldn't B. mustn...

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turn on    turn off    turn down    turn up  
turn up   turn down   turn on   turn off  
turn off    turn out    turn over    turn down  
so that; has been turned    when; has turned    if; has been turned    because; has turned  
turn over    turn off    to turn on    turning down  
turn on    turn off    turn down    turn up  
turn down  turn on  turn off  turn  
so that, has been turned    when, has turned    if , has been turned    because, has turned  
turn down   turn off   turn up   turn on  
turn ; off    turn; on    take; off    take ; on  
turn down  turn off  turn up  turn on  
Turn down it    turn it down    turn off it    turn it off  
turn down    turn off    turn on    turn up  
turn up    turn down    turn to    turn off  
turn on    turn off    turn down    turn up  
turning off;to use  to turn it off;using  to turn off it;to use  to turn it off;to use  
turn on  turn off  turn up    turn down  
so that; has been turned  when; has turned  if; has been turned  because; has turned  
turn away  turn down  turn back   turn off  

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