______ is a waste of time spending many hours ______ computer games every day.
| A．It; to play | B．That; to play |
| C．It; playing | D．That; playing |
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______ is a waste of time spending many hours ______ computer games every day.
| A．It; to play | B．That; to play |
| C．It; playing | D．That; playing |
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