摘要：13．We are living in an age many things are on computer. A．when; done B．that; being done C．that; doing D．when; doing
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We are living in an age ______ many things are done on computer.
| A．which | B．that | C．where | D．when |
We are living in an age ______ many things are done on computer.
A．which B．that C．where D．when
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