Don’t touch ______ live wire, or you will get ______ shock.
Mr. Smiths was busy writing a story, only ______ once in a while to smoke a cigarette.
Tom, you play the violin so well. But I ______ you can play the violin.
For more information, please send an e-mail, ____ you can also include your advice to us.
We have just heard a warning on the radio _____________ a typhoon may be on its way.
I will spend half of my holiday practicing English and _____________ half learning drawing.